Don't ask here . . . ask congress
Congress has created (Largely for ITSELF!) a loophole so that some folks don't have to honor the do not call list.
If enough of us write letters to our elected representatives, they might decide to reconsider their selfish invasion of our privacy.
IF YOU ANSWER AND SAY THE MAGIC WORDS, THEY ARE (all) REQUIRED TO STOP. Magic words: "Put us on all do not call lists."