At first, they were calling with a number that would come up on the caller ID. Now they call with unknown caller. It is from some consumer credit company. They give a recorded message and press 1 to find out how to lower your rates.
I wait until an operator answers. When I politely ask to be put on the do not call list they hang up. One guy was polite, and said he would add my number to the no call list.
They still call.