Calls keep coming in from 508-409-6874 - I do not answer and a message is never left.
Totally annoying!

This number called  told me he was from Comcast  he asked me if I was insert my name here   he said I was a loyal customer and wanted to make sure I have the best deal   And to get me the best cable package  and then the call was lost. he came up as a mass number

Comcast Xfinity wanting to talk about my service. It's my only choice I told them.

This number called (from a local number), I answered, heard background noise, but no response. Then they hung up on me. I called back and it said it was a tele service that makes calls on behalf of Comcast. Concerned it could be one of the voice stealing scams.

I don't want your calls.  I'm on a no call number.