Why I am 99.9% certain I will cancel my Comcast Cable today, and perhaps my Digital Voice

This is what I would like answered: Why, have I had constant pixilation problems for SEVERAL months, shappening every 2-3 days after I got HD, and after the 12th call to have a signal resent or the 3rd in home technician visit, the pixilation is bad, but the morning after I get a new box I get a new error code telling me that my HDTV is not compatible with HD? When it was the night before? and I have to call, AGAIN, to have my signal reset and my box rebooted? I can answer that myself you awesome comcast guru's...because I didn't cancel my service and switch to satellite HD in the first place. And today, when I drop my box off at my local Comcast location and tell them to discontinue my service, and I decide to just go ahead and cancel my digital voice service because, let's face, who really needs a landline anymore? I will know that I no longer have to move my entertainment center, call, be put on hold, and be told to do the same thing EVERYTIME that NEVER fixes any of my problems for more than a few days/weeks. Short of being told "Hey, that box you got Wednesday needs to be switched out, again, and you should try our cable service free this month to make sure you don't have anymore problems" I AM cancelling. All my TV shows are on the internet anyway, AND I don't even really watch the movie channels. AND if there is any fee to cancel, the BBB will surely enjoy hearing from me.