Comcast has been known for poor customer service in the past but is now on the leading edge and should be commended. You can follow the happenings at the company on Twitter and immediately engage with a corporate exec.
Here is an excerpt from an article on the matter:
I spoke to Comcast Director of Digital Care Frank Eliason, who personally responds to each and every comment and complaint sent to @comcastcares on Twitter, at all hours of the day (there are currently over 20,000 posts). All you need to do to reach him is to get on Twitter and begin a post with @comcastcares. From what I can tell, Frank usually responds within a few minutes (even on weekends!). That's right--you can reach a Comcast exec with only 30 seconds of work.