Try buying Digitone call blocker and program only the numbers that you want ringing your phone. You can white list upto 30 numbers. The rest gets blocked.
I have well over 150 numbers in my contact list as "Do not answer - CCS (credit card scam). I can no longer even answer my phone if a number, not a name comes up since they now have started using local and MY area code
No, they can't be stopped. I've already talked with Verizon and they say they can't do anything about it. I receive these calls from the same and different number, multiple times a day, EVERY Fing day.