I do have a do not call on my cell phone and home phone. This number - 207-434-1450 - still gets through. Check on the FTC website for putting on the "do not call," and what to do about violations. Violators can get fined up to about $10K per call in violation of the order, but you need to keep track.
I just received a call from this number. When I answered I didn't say hello but there was nobody there. These calls come to my cell. Tried to call back and hit star 67 before I dialed but alas it was a disconnected number.