Why don't people just block the number and be done with it and move on? Yes, I see that this number calls constantly however, I blocked them two months ago and never hear from them (because they are blocked). We are at a time now where these type of calls will not stop. Either block the call or just ignore it. Nothing else you can do.
Not true anymore thanks to the telezapper. That is what it did was play the disconnected tones. Since so many people had it now they ignore the tones. The best way is to get a call blocking box. It just blocks the calls of flagged numbers. I use a program called call clerk on my computer using a modem it does the same. Just picks ups, plays the three tones and then hangs up automatically. Two rings and the call is gone.