I became fed up with Comcast and threw them out but kept their Internet. I bought a "Surfboard" combined modem and router at Best Buy for around $100.
I then went to AT&T and installed (real easy) an AT&T box which actually works off of our Cell Phone for $20 per month. You keep you regular home based phone number so it is invisable that you are actually using the internet for all calls including local and long distance. Thus we have Comcast Internet, our own modem/router, AT&T at $20 per month and Direct TV which far excels Comcast. We are sorry we took so much of their abuse before we cancelled them. I just didn't want to go through the pain of changing everything over but it was really worth it in the end. The service from DirectTV is terrific, the picture is much much better than Comcast, their Genie is great and I no longer suffer under the terrible Comcast Company. It is no wonder they were voted the 2nd worst in the Country with Time Warner being the worst. How the heck can anyone be any worst???