Yeah, I know.. I run into this stuff a lot.. usually it's just one account with everyone chipping in, like a half-way house at the beach we had to fix a few weeks ago. But every case is different, and yeah, it sounds like a bunch of bullshit that you're dealing with.
I don't know how comcast is when it comes to losing customers to sattelite.. but we don't play around with that shit, so I suggest you call up and request a supervisor right away and then explain the situation, and that if they can't get you going, you'll be calling up Dish or whoever for your tv and getting dsl for your net.. assuming you have a viable dsl option at your address.
Hop in, strap down, and hold on tight.