Comcast (Xfinity) voice offers a FREE spam call blocking service that works GREAT! The phone might ring once, but then is disconnected once it is identified as a spam call or telemarketer. Verizon needs to get on board. I get 7-10 calls a day on my wireless line, I block the number, but the calls keep coming from different number, all with the same recorded message. If you agree, please comment and maybe Verizon will add this service.