There is no stopping them, one of their miscreants said to me- "if you buy their services the calls would stop", - arrogant eh! Well, I bought me a whistle, one like those used on the football game field, with the rotating ball inside, gives an extra loud shriek. When they called I'd give them a real loud BLAST as loud as I could.
That seemed to have stopped them so far.
Probably need to expand this as an anti scam campaign.
Received call from same number, had spill about today being last day they could lower my interest rate. When I started asking questions they hung up. (Doubt the call was legitimate). Phishing call trying to get my card number. Scam.