See my comment below. DO NOT CALL THEM BACK. Look up the real Verizon number on your bill and use that instead: these guys are NOT Verizon and if you give them your credit card number they won't just take the 20 bucks or whatever you think you're paying them.
I just got the same call..."local call". The call is a Michigan call, but in Lower Michigan. I am in upper Michigan. When I answered I got a loud background but no one said anything then hung up. This happens to be the first time this number came up. I am not one to answer my home phone, and it was a business number at one point.