Why i hate AT&T!

OK now I receive mail that my home phone service will be changing to the new AT&T. They said I will save money if I use the new AT&T service plan. While I do save a little money. They seem to change what it will cost per month. The guy I signup with the plan stated it would cost around $70 a month. Then a couple days later I call again and was told it would cost $86. By the time I receive my next bill. Who knows what it will end up costing me. This is the main reason I held off getting an iPhone. AT&T simply sucks!