That call center you reached? If they're in the US, the person speaking may be a prison inmate - Boing Boing

MSNBC reports: "When you call a company or government agency for help, there's a good chance the person on the other end of the line is a prison inmate. The federal government calls it "the best-kept secret in outsourcing" — providing inmates to staff call centers and other services in both the private and public sectors."

Better still, the US gov makes about $750M a year off of this sort of thing. 

Please read more from: 

http://boingboing.net/2012/01/12/that-call-center-you-reached.html