Callbox, Martal Group, CIENCE, TeleDirect, Leadium - these are among the top telemarketing companies sales teams rely on to generate qualified leads, increase conversion rates, and build consistent pipelines through targeted outreach and performance-driven communication strategies.
Best Telemarketing Firms
6 Companies-Rankings updated: September 06, 2026
DesignRush evaluates all telemarketing firms based on their expertise, success stories, and verified client reviews. Some listings may be paid.
AsterSense provides tailored CRM solutions, contact centre services, and WhatsApp integrations to enhance business efficiency, customer engagement, and growth...
Top Services:
CRM Consulting
Call Centers
Location
Singapore, Singapore
Number of Employees
Under 49
Average Hourly Rate
$50/hr
Minimal Budget
$1,000 - $10,000
AsterSense Pte. Ltd. Services
CRM Consulting
Call Centers
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Voicentric are specialists in scientific marketing for Life and Materials Science companies. We deliver intelligent telemarketing and B2B lead generation that connects you directly with decision-makers worldwide. Our multilingual team excels at engaging scientists with complex technical information, building...
Top Services:
Direct Marketing
Call Centers
Digital Marketing
Advertising
Event Marketing
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Location
Durham, United Kingdom
Number of Employees
50 - 99
Average Hourly Rate
$47/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
5 Projects Listed
Voicentric Services
Direct Marketing
Call Centers
Digital Marketing
Advertising
Event Marketing
Market Research
Phone Answering Services
Customer Support
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Call center firm SwiftCare Billing makes it easy to elevate healthcare operations and streamline claims, coding, and denials management for providers of all sizes. Superior solutions are born from our profound experience in medical billing and revenue cycle optimization...
Top Services:
BPO
HR Outsourcing
Customer Support
Phone Answering Services
Call Centers
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Location
Evesham, New Jersey
Number of Employees
50 - 99
Average Hourly Rate
$20/hr
Portfolios Count
3 Projects Listed
SwiftCare Billing LLC Services
BPO
HR Outsourcing
Customer Support
Phone Answering Services
Call Centers
Accounting
Web Design
Web Development
WordPress Website Design
Transcription Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Health Care Industry
Dental Industry
Insurance Industry
HR Industry
BPO
Outsourcing
Medical Billing
Data sourced from the agency's DesignRush profile
SwiftCare Billing LLC Reviews & Testimonials
Julie Formica Office Administrator at Redefine Healthcare
5.0★
Medical Billing Review from Julie Formica
We have been partnering with SwiftCare Billing for the past year to manage key administrative operations, including billing, accounts receivable (AR) processing, and file indexing. This collaboration has been instrumental in improving our internal workflows, reducing turnaround times, and enhancing the accuracy of our financial and document management systems.One of the major strengths of SwiftCare Billing is their responsiveness and client service. From the initial onboarding to ongoing operations, their team has been professional, communicative, and solution-oriented. We receive regular updates and clear performance metrics, which has helped build a high level of trust in their services.While our overall experience has been highly positive, a few initial challenges related to software integration and adapting to our internal protocols required some time and coordination. However, SwiftCare Billing showed flexibility and commitment in overcoming these hurdles, and weve since seen steady improvements in alignment and efficiency.Overall, SwiftCare Billing has proven to be a reliable, professional, and valuable partner. Their services in billing, AR, and file indexing have added measurable value to our operations, allowing our in-house team to focus on core business activities. We would not hesitate to recommend their services to other organizations seeking a capable and trustworthy outsourcing provider.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Cavinolr Recruiters specializes in connecting top-tier talent with organizations in CS, Retention , sales, life sciences, healthcare, and biotechnology sectors. The firm combines industry expertise with personalized strategies to deliver exceptional recruitment solutions tailored to clients' unique needs...
Top Services:
BPO
Phone Answering Services
Translation Services
Customer Support
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Location
Plantation, Florida
Number of Employees
250 - 499
Average Hourly Rate
$12/hr
Minimal Budget
$1,000 - $10,000
Cavinol Panama Services
BPO
Phone Answering Services
Translation Services
Customer Support
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Top Customer Service is an AI-assisted call center and BPO company, combining human agents with AI tools to deliver 24/7 inbound call handling, outbound support, live chat, and virtual assistant services. The agency caters to clients across eCommerce, media, entertainment, and automotive sectors...
Top Services:
Customer Support
Call Centers
BPO
Phone Answering Services
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Location
Albany, New York
Number of Employees
500 - 999
Average Hourly Rate
$10/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
26 Projects Listed
Top Customer Service Services
Customer Support
Call Centers
BPO
Phone Answering Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Trainual Inc
15Five
ElectrIQ Marketing
YCharts
PERQ
GMass
Heinz Marketing Inc
Arch-Con Corporation
Data sourced from the agency's DesignRush profile
Top Customer Service Reviews & Testimonials
Manoj Thenua Chief Executive Officer at Medico Hub
5.0★
Customer Support Review from Manoj Thenua
I recently engaged a customer support provider to manage client service and support tasks for my healthcare-oriented platform. From the outset, their team was extremely professional, responsive and attentive. Their onboarding process was smooth, prompt, and well-organized. Throughout the project they handled all support tickets including account queries, billing questions, technical issues and general user guidance with empathy and clarity.What impressed me most was their commitment to quality: they consistently responded quickly to inquiries (often within minutes), maintained a helpful and courteous tone, and followed up until the users problems were fully resolved. Feedback from my users has been overwhelmingly positive: many praised how easy it was to get help and how satisfied they were with the assistance.Thanks to their efficient support, user satisfaction and retention improved noticeably compared to the period before they handled support. I also experienced fewer escalations and received fewer complaints overall. Their professionalism and consistency gave me peace of mind and freed me to focus on growing the platform rather than handling day-to-day support issues.Overall, working with them has been a very positive and productive experience the quality of support exceeded my expectations.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Kimon Services is a UK-based company specializing in cost-effective outsourced business admin solutions, including dedicated customer support, data entry, and back-office staffing. We offer managed offshore teams and Employer of Record (EOR) services tailored to client needs, helping businesses reduce costs...
Top Services:
BPO
Customer Support
Accounting
HR Outsourcing
Phone Answering Services
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Location
London, United Kingdom
Number of Employees
1000 & Up
Average Hourly Rate
$10/hr
Minimal Budget
Under $1,000
Kimon Services Services
BPO
Customer Support
Accounting
HR Outsourcing
Phone Answering Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Global Guardians
GorillaHub
21st Century AV Ltd
n-gage messenger
Meeting Store
PNG CR
Data sourced from the agency's DesignRush profile
Kimon Services Reviews & Testimonials
Martin F Review from Google
5.0★
Martin F's Review Sourced from Google
Excellent company. Michael works hard to understand your needs and create a customised service around your specific requirements. The VA's have been able to accurately fulfil our scope of work and at an affordable price point.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
5 Frequently Asked Questions About Telemarketing Firms
What do telemarketing companies do?
Telemarketing agencies use phone-based direct marketing to sell products, generate leads, or book appointments on behalf of businesses, performing both outbound and inbound calls to grow sales pipelines and client relationships.
As all telemarketing interactions involve direct human contact, the approach allows them to influence potential customers’ opinions, purchasing habits, or perceptions toward a brand.
What services do telemarketing firms provide?
Telemarketing services for businesses can be split into two main categories: inbound and outbound.
Inbound telemarketing services cover customer support calls, namely technical support, order taking, billing inquiries, upselling, and virtual receptionist service, to name a few. They can support both B2B and B2C companies.
Outbound telemarketing services, also referred to as proactive outreach, are intended to boost businesses’ bottom line. This category comprises several different service types, including lead qualification, appointment setting, cold calling, customer reactivation, and more.
B2B telemarketing companies are often hired to assist non-profit organizations in soliciting donations or to collect debt and follow up on overdue accounts on behalf of other businesses.
How much do telemarketing agencies charge for their services?
Telemarketing agencies charge between $7 and $75 per hour for their services. The service cost can also vary based on location (offshore vs. onshore), campaign complexity, duration, and agent experience, with B2B telemarketing campaigns often costing more than B2C.
Other common pricing models include:
Per-lead: $35 to $60 per qualified lead
Flat-rate: $650+ for a 4-week campaign
Commission-based: 5% to 20% of each closed sale
How long do telemarketing campaigns take?
Telemarketing campaigns usually take a few months, as lead nurturing takes multiple phone calls for telemarketers to engage with a prospect and close a sale.
Although initial lead generation begins within the first few weeks, for a full, effective cycle, the campaigns are run between 3 and 6 months. The average campaign takes about 14 weeks to reach an optimum level of opportunities per day. The length also depends on the campaign type:
Pilot and trial campaigns: Usually run for 10 to 12 weeks to test the market, refine the pitch, and validate traction.
Short campaigns: 4 to 6 weeks for time-sensitive promotions or event registrations.
Long-term campaigns: 6 months to over a year for slow B2B sales cycles that require more lead nurturing.
What kind of ROI can businesses expect from telemarketing campaigns?
Lucrative telemarketing campaigns often result in a 5:1 to 10:1 return on investment (ROI), meaning $5 to $10 in revenue for every $1 spent. The return rate depends on the quality of the call lists, the persuasion skill of the callers, the product, the offer, and whether it's part of a multi-channel strategy. Notably, ROI grows over time through stronger customer retention and better targeting informed by feedback from calls.
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