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
2 Companies-Rankings updated: September 04, 2026
DesignRush evaluates all telemarketing firms based on their expertise, success stories, and verified client reviews. Some listings may be paid.
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
Mysoft Heaven (BD) Ltd. is a Top Software Development Company with 15+ years of excellence. We specialize in enterprise-grade solutions like ERP, FinTech, e-Governance, and HRMS (HR Sheba). Our scalable SaaS platforms and Cyber Security solutions empower global organizations...
Top Services:
Web Development
Digital Marketing
Mobile App Development
Software Development
Staff Augmentation
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Location
Mirpur, Bangladesh
Number of Employees
250 - 499
Average Hourly Rate
$50/hr
Minimal Budget
$25,000 - $50,000
Mysoft Heaven Services
Web Development
Digital Marketing
Mobile App Development
Software Development
Staff Augmentation
BPO
HR Outsourcing
Web Design
Digital Services
SEO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Land Reforms Board, Ministry of Land
Bangladesh Agricultural Development Corporation
Bangladesh Scout, Ministry of Education
Bangladesh Bureau of Statistics (BBS)
a2i & UNDP
JICA+ NILG
Bangladesh Trade and Tariff Commission, Segunbagic
Alliance Group, Bangladesh
Centre for the Rehabilitation of the Paralyzed
JT Enterprises
Data sourced from the agency's DesignRush profile
Mysoft Heaven Reviews & Testimonials
Jahidul Islam
Review from Google
5.0★
Jahidul Islam's Review Sourced from Google
Coordination-focused role with cross-team interaction
Pros:
Regular interaction with developers, clients, and management helps build strong communication and coordination skills.
Cons:
Managing multiple stakeholders at the same time can be challenging.
Advice to Management:
Clearer role boundaries would help reduce dependency-related delays.
SAHED HOSHEN
Review from Google
5.0★
SAHED HOSHEN's Review Sourced from Google
"Choosing Mysoft Heaven (BD) LTD was the best decision! They combined innovation with flawless execution, delivering our project on time and beyond our expectations. Amazing work!"
SM Nasim Abbas
Review from Google
5.0★
SM Nasim Abbas's Review Sourced from Google
"I've been using There software for my small business, and I can't imagine going back to the old way of doing things. It has simplified so many tasks, saving me hours of work each week. Their support team is always there to help if I need anything!"
Reviews verified by DesignRush and sourced from the agency's profile
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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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