DNC works reasonably well, but it is intended as a guide for law-abiding telemarketers. The persons calling you are criminals and scofflaws. They ignore all laws. Invest in a call blocker and DO NOT pick up on numbers you do not recognize.
They call me at work everyday several times a day so I can not block them, I do not have a mortgage and do not want a mortgage don't know how to get them to stop