As many businesses grow, the hassle of managing employees grows along with it. Two of the hardest groups to manage for me were outbound sales and customer service. In the technology industry in the 1990's (which is where my management career started and ended) had few processes developed for inbound and outbound calls. In a small business, your "super admins" end up dealing with most of these things and often get burned out.
Many, many call centers existing in the United States that are affordable, well-managed and easy to integrate into your business. It's not all the stereotypical Indian or Malaysian call center that we've all come to dread. If you're overwhelmed because you've got more business than you can handle, you might want to consider outsourcing call centers as an option. But just what do they do?