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 a call from this # at 11:58 this a.m. Was a recorded message and said her name was "Susan" calling from Consumer Credit Services. After that I hung up and did not listen to the rest of the message because I knew this was a scam.