AT&T Rip

Will someone please tell me what in the heck is AT&T up to with thier absurd long distance charges. I have personaly called to so many times for them to correct their billig that I have had just about enough of their crookedness.
On October of last year I called AT&T to dispute charges that they charged for long distance calls. First of all I do make alot of long distance calls and some times the line never gets through because of the poor communications in the other country but they still charge me for 1 minute $1.02. They can plainly see that if ther are 15 calls to the same number within a 3 minute period obviously I did'nt get through. DAAAA
Any way everytime I call they tell me they are sorry and it would not happan again. so the credit me the amount. Well last month they said that they can no longer credit me for those unused minutes because of a new policy or something(alot a bull if you ask me). Well I said if you dont I will go to another carrier. They did'nt even care. Get lost AT&T! you crooks!