USA 800 can process more than 100,000 calls per day from its three call centers. The company has been recognized as the largest 100-percent employee-owned contact center in the United States. For more than 10 years, Customer Interaction Magazine has named the company a Top 50 Inbound Call Center. USA 800 specializes in managing inbound calls for its target industries. The company s services include customer care, sales and lead acquisition. USA 800 has a location in St. Joseph, Mo.