The bulk of the overcharge was actually due to Verizon, which had strangely pro-rated our minutes (even though they billed for an entire month) and then charged us for our usage over the pro-ration, even though we were well under our monthly plan minutes. The Verizon guy was completely stumped as to what had happened, but he quickly agreed it was their error and put through a credit.
The other issue is DirecTV, which is billing me for supposedly "free" channels. I have to deal with that one tomorrow. I knew this bill was going to be huge, as it's for two months (due to the move), but it's still absurd. Especially after all the time I've spent on the phone right after the move just to get things straightened out to begin with.