Aha! I bet they're slipping through the "previous business relationship" loophole. I get calls from this # multiple times a day and I think it's because I once called about a "weight loss opportunity." Grrrr.
I received a call on my cell phone this morning and got the tail end of a recording, I called back and it was a busy signal...I too am on the Do Not Call List for my land line and cell line!