AT&T Wireless ,formerly Cingular, at&t wireless threats against me if i ancel a service. when i dont even have a contract. n/a, California Nationwide

at&t is a fraud and deception to any u.s. customer. back in april 2009 i was in aventura florida. i went to aventura mall to get service with at&t wireless . i was approved in no time. i live in oregon city, or. during the activation process . i was told that they have to give a florida number and right away . they ( salesman ) have to contact the at&t relocation dept. to relocate my account to oregon . so the salesman got it supposedly done. after 2 months . at&t charged me a florida communication taxes. i found out in september. so i contact 611 customer service and they gave me . a retroactive credit . because they admit it was an error . that cost me money$$ . well they mis informed me . with diferent amounts of such credit at the end everything was clarified . and no more problems. 3 days ago . i called 611 to find out about a new handset. just because they were playing with the pries. i decided to cancel my service. guess what! i set up the cancelation. and after 10 minutes a mexican girl . called me. just to tell me that if cancel the service they will take the credit they gave me away. because they gave me the credit for retention. to keep as a customer.  i dont have any contract with them i can cancel at anytime. and is about to happen.  they dont want to know my bad side. in the i'm with them because of technical issues with my nokia highend phones.require a good 3g signal . and t-mobile 3g is for their phones (mickey mouse handset. designed by a kid and for kid's ) my point is at&t will do anything to keep you . and if you try to spit in their face . this is when the crap .is gonna hit the fan. so be careful .