I got tired of trying to block them or relying on the "do not call" crap. So now, I just save them as a contact and mark them as Telemarketer. When I look at who is calling my phone it says Telemarketer. Unfortunately though I have 52 different telephone numbers marked as Telemarketer. Ha Ha ha
What part of this do you not understand? They are not "Telemarketers"..... they are f....ing SCAMMERS trying to trick you into giving them your credit card number.