I worked for Verizon before I worked for AT&T (I'm out of the cell industry now, thank god) and there seemed to be less inaccuracies in billing with Verizon. Of course, both tend to pass on any government regulatory charges to the customer (and there are a LOT). Municipal, county, state, and federal fees add up. That's why your bill will never be the advertised pricing. And I'm not talking just taxes. I mean, it is not entirely the carrier's fault. They have to make up those regulatory fees somehow, I just dislike the way that they name them so that they look like required fees from the government.