I've worked with different several big companies in the U.S. such as Panasonic, Time Warner Cable, Office Depot, AT&T, Fingerhut in the most popular physical call centers based in the Philippines as a customer service before I started working from home.
I'm happy to assist you in providing customer/chat/email support to help you acquire new prospects or help you maintain good relationships with your existing customers to increase/maintain good profits for your business.