P.W.
I just had a rant about Comcast last week. Personally, I can't stand the company, but I keep using them.
All I do in these situations is keep calling until I get someone on the other end who has a brain and fixes my problem. Last week my bill doubled because some idiot put in a bunch of random charges, and after calling for a couple of days, I finally got someone intelligent who fixed my bill and gave me a credit.