I am as fed-up as you are. I have the slowest speed AT&T DSL, 3 months ago they increased my monthly rate from $19.95 to $25.00. In order to save money as I haven't had a raise at my job since 2007 and my money only goes so far, I changed my landline service from unlimited calls to measured service to make-up the difference.
Now I just got my latest bill and they have increased my measured service base rate over $6.00 (I never went over my allowed 45 calls a month).
There is no way I can downgrade my AT&T service any lower, so my next option is to cut the landline altogether and go with Magic Jack or something similar.
AT&T will squeeze and squeeze even more until they can't get any more money from us. I'm at that point now.