I was getting calls from various strange numbers; some that called, said nothing and just hung up, or numbers that, when you call back to see who was calling, give you a message that the number is not in service. I got so sick of it that yesterday I called my phone company and asked if there were a way to block a specific number, and, lo and behold, a service I never heard of which was "supposed to be included in your bundle." The telephone company rep then turned on this service for which I was paying and had no idea I had, so I'm trying it out - apparently, Century Link offers a  " *60 " service which allows you to block any caller you don't want to hear from - up to twelve numbers. Call your phone companies. Ask if they have a similar service.