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
4 Companies-Rankings updated: September 05, 2026
DesignRush evaluates all telemarketing firms based on their expertise, success stories, and verified client reviews. Some listings may be paid.
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
Professional Multilingual Communication And Support At Scale
Fluency LLC provides a comprehensive suite of human-led call center services designed to bridge communication gaps and enhance customer experience. Based in Columbus, Ohio, we specialize in high-stakes environments where linguistic precision and cultural empathy are essential...
Top Services:
Call Centers
BPO
Translation Services
Customer Support
Phone Answering Services
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Location
Hilliard, Ohio
Number of Employees
Under 49
Minimal Budget
$1,000 - $10,000
Portfolios Count
2 Projects Listed
Fluency LLC Services
Call Centers
BPO
Translation Services
Customer Support
Phone Answering Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
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
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
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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