One of the hardest things in business to do is apologize, but it's also one of the most effective. I learned that a while back, it's great, because it shuts up the customer pretty quickly, so you can defuse things fast.
As FS said, this is not a skill Comcast has learned either, if it makes you feel any better. I think we are about to drop them and try the Google TV thing, and try to get local channels only. Yesterday was awful, the game froze and/or pixelated every 10 seconds. Awful. I call and they tell me the best they can do is get someone out to us in the middle of October.
Eff you, Comcast.