Like the previous poster, strike one with AT$T was their refusal to unlock my iPhone prior to my Canadian vacation.
Strike two was when their store refused to sell me a 920 off-contract.
Strike three was discovering that I could get service on T-Mo for half the monthly nut. The fact that T-Mo's data speed wad twice AT$T's in my area was just gravy.
I paid the ETF to get off AT$T and was money ahead in four months.
It's not that T-Mo hasn't got some serious problems of their own, and shopping for phones with magic. AWS bands is a pain, but with stunts like the dumbed-down 1520, I'm still not feeling the need to double my monthly bill and fo back to a carrier that is so blatantly hostile to their own customers.
I'll eventually probably end up paying premium prices to Negri, but it'll still be cheaper than giving the death star my custom.