Lower my interest rate when I don't ever carry a balance and this last week I was called 3 times.

They keep calling me about lowering my interest rate when I don't ever carry a balance.  I press the number requesting no more calls and it does no good.  The calls keep coming and it is becoming very annoying.  they called 3 times within the last 5 days and have called at least weekly.  My neighbor has the same complaint.