I too am being harassed by these people!  I have tried everything, including leaving my phone number "after the beep" as their recording says to do (and then there is no beep!!!) and I'm still getting almost daily calls from these people.  If anyone knows how we can stop them (is there a place in Delaware we can report them to?)  I would greatly appreciate it.  I expect a few unsolicited calls from places every now and again; but when it's repeatedly coming from the same number even after numerous attempts to have them stop, that has to be a gross violation of our right to be free from harassment, right???