When I moved I asked a customer service rep how to do it properly so that it was a smooth transition. She said "what's your new address and date of move?" So I told her my info and she went "OK, you're all set.. and look you get this new promotion with a lower price for the same package you have!" Ok..
So on moving day a Comcast dude came in, plugged my receiver into the wall (that I already had) and plugged in my cable/phone modem (that I had). Took him 2 minutes and he peaced. I noticed I didn't have any of my movie channels I had before. They told me my old deal expired and I needed to add them, but there would be this super awesome discount! So I took them yet again.
Boy was I surprised when I saw my bill wasn't the normal $110 it was previous but instead $300+. Those movie channel deals apparently didn't go through because I got charged $20 each for each channel (HBO, Starz, maybe more). I also noticed a $90 install fee (I think, can't remember exact price). That's funny. I paid a dude $90 to plug my stuff in, the apartment already had Comcast previous so nothing further was required. There were some other charges associated with the move too, I can't remember exactly what they were but they weren't told to me at the time we set this up.
I spent the better part of the day continuously calling Comcast about these charges. It seemed some of the reps didn't care, but after a few hours I would find that one guy that was willing to fix it.
I got the movie channels for free for something like 6 months. Score.
I told this one guy that the person who setup my move never told me about the charges associated. I guess if they don't disclose this stuff they can't charge you, so all of those charges were removed, every single one.
I then told another rep that the person who setup my move never gave me the option for a "self-install", which I wasn't aware of. Again, if I did the self-install I would've just plugged in my shit and been good to go - just like the installer did. I wasn't made aware of the option and clearly would've chosen that and not been ripped off by their comcast tech. The guy took away all $90 I was charged for the install.
I don't know if these people get in trouble for such egregious errors or if it's SOP, but they suck a big fat donkey dick regardless. As soon as I can find a place that offers ANYTHING besides Comcast I'm going for it.
I did feel a small victory for reducing my bill by so much, but it was barely worth it. I may have saved roughly $190 or more just by calling, but it took me a good part of 8 hours to take care of it - and some of it was just luck of the draw on which rep I got. I had to call comcast so many times and speak to so many reps that I couldn't take it anymore. I even resorted to the online chat because I was tired of explaining everything a million times.
FUCK COMCAST.