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 05, 2026
DesignRush evaluates all telemarketing firms based on their expertise, success stories, and verified client reviews. Some listings may be paid.
Protel BPO, nothing matters more than how your customers view your brand how they interact with it
Protel BPO provides inbound voice, outbound voice, live chat, and back-office outsourcing from two call center locations in Belize, operating in US Central and Mountain time zones with native English and bilingual Spanish agents. Since 2012, it has served retail, healthcare, and travel clients...
Top Services:
Call Centers
BPO
Customer Support
Phone Answering Services
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Location
Belize City, Belize
Number of Employees
500 - 999
Average Hourly Rate
$14/hr
Minimal Budget
$50,000 & Up
ProtelBPO Services
Call Centers
BPO
Customer Support
Phone Answering Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
J Crew
Sight Partners
Blue Valley
Data sourced from the agency's DesignRush profile
ProtelBPO Reviews & Testimonials
Jeffrey Warren Customer Experience Expert at Macy's
5.0★
Call Centers Review from Jeffrey Warren
While working with Protel BPO, I had the pleasure of experiencing what can only be described as outstanding contact center service. From the get go, it was evident that the agents at the call center go above and beyond to ensure customer satisfaction and a quality experience. The representatives at Protel BPO were not only courteous but also highly knowledgeable about our products and services. They patiently listened to inquiries and provided detailed and accurate information, demonstrating a deep understanding of our company's offerings. What truly stood out was the efficiency of the call handling process. Clients experienced short wait times, and once connected, the representatives were quick to address their questions or concerns. The agents' professionalism was commendable. They always conveyed a genuine willingness to assist and went the extra mile to ensure customer satisfaction. It's evident that Protel BPO places a high value on providing top-notch service to its customers. I feel that it comes easy to them, probably because of the "Belizean" culture. Overall, my interaction with Protel BPOs call center surpassed my expectations. The combination of courteous representatives, efficient call handling, and a commitment to customer satisfaction makes them stand out in the space of customer service. I highly recommend Protel BPO's call center for anyone seeking a positive and hassle-free customer experience.
Jackie Capalleja Customer Service Manager at Allstate
5.0★
Call Centers Review from Jackie Capalleja
As the Allstate manager involved in our partner relationship with ProtelBPO, I was extremely pleased with their inbound call center services. Their dedicated team efficiently handled our customer inquiries and requests with remarkable professionalism. The availability of 24/7 support ensured clients received prompt assistance. ProtelBPO's agents are well-trained and always eager to learn more. They take pride in having a deep understanding of our industry and our company's products and service offerings. The seamless integration of technology when needed enhanced and simplified our team's ability to oversee and manage their team. Their commitment to excellence is evident in every interaction, making them an invaluable partner in delivering top-notch customer service.
Paul Benefit Regional Head Of Customer Service at H&M
5.0★
Call Centers Review from Paul Benefit
I am very pleased and impressed with Protel BPO's inbound call center services. Their team is professional and focused on quality. They have consistently delivered exemplary customer service, addressing our customers' queries and concerns with the utmost professionalism. The team at Protel has been proactive, responsive, and efficient, ensuring smooth operations and great customer satisfaction. We greatly appreciate their dedication and expertise, making Protel an invaluable partner for our customer service efforts.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
We Focus On Customer Service So You Can Focus On Your Business.
Five Star Solutions is a premier, mid-sized contact center outsourcer dedicated to delivering world-class customer care. By blending boutique-level agility with enterprise-grade capabilities, the company serves as a seamless extension of its clients' brands...
Top Services:
Business Consulting
Call Centers
BPO
Phone Answering Services
Show more
Location
Sioux Falls, South Dakota
Number of Employees
1000 & Up
Average Hourly Rate
$25/hr
Minimal Budget
$50,000 & Up
Five Star Solutions Services
Business Consulting
Call Centers
BPO
Phone Answering Services
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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