(601) 707 in Madison, MS

I have received 7 calls in the last few day, I blow my whistle or just hang up; I never say a word, but the calls just keep coming. I have received over 36 unwanted calls in Oct. alone, but nothing I do helps. Sometime late at night the caller let the phone ring 1 or 2 times then hangs up before it can register on caller ID. I am logging all these calls from several states. I need help. Can't these be stopped?

We are a bank in Oxford, Mississippi. This telemarketer has called our bank and every extension 3X - making 20 repeated telephone calls on 10/29 and 11/2. We have requested they remove our numbers from the calling list and they either hang up; tell us it will take 72 hours or say they will and immediately the phone calls continue.