For something like call center agents, as a small business $19.90 is too low a price. I have the same problem with Wordpress hosting. I use wpengine for $50+ per month (I don't recall what we actually pay) because for less money I presume the service provider won't care or have the resources to resolve any problem.
This is something we discussed. Thats why $19.90 is an introductory price. We are actually losing money on that. But since our India business is profitable, we are offsetting that for the first few customers. The actual price is ~$50