These people are idiots. I am on the national do not call list, and I have reported them and I STILL get calls. I have illness in my home and their calls are annoying, disruptive, and antagonizing. It seems the harder you try to make them understand why they should not annoy you, the more frequent they call.
They will not quit calling. We hang up. It doesn't seem to do help, When you call it back it does not take incoming calls, It is getting ridiculous. If you answer they will not say anything,