Got my bill last month covering the period when I moved house. I got a 24-month contract with no install fees last November at my old address and was told the moving fee is $60. Fair enough, but the last bill charged me for an early disconnect fee - $200!!!
I gave them a call, got straight through and was told there was a problem with the billing system last month charging an early disconnect fee when it shouldn't. She quickly sorted out the problem and credited my account. Sounds like this has happened before...
So if you've moved, check your bill to make sure they haven't over-charged.
So.... crappy that their billing system is buggy, but good customer service to fix it up.