It came out a few years ago that we could call a certain number and block the unwanted telemarketers and such. But I have been getting political polling and robo-calls ever since anyway. I screen all my cell phone calls. Anyone that calls me that is not on my caller ID list or the caller's ID is blocked, it goes unanswered. Sometimes it goes to voicmail and I get a partial robo-call. The only way I know to positively block unwanted calls is to go to my online account with Verizon and block the specific number. But I have to know the number to block it.