Many many moonlights ago, I had an AT&T cellular phone. At the time, they were using your main (day) minutes before applying your free minutes. There was even a class action suit a couple of years ago because of this. I tried at the time to explain to them they had miscalculated my minutes but to no avail. My bill stood at about $600. I never paid because I knew I didnt owe them anything close to that. Now, like 5 years later, the collection agency that now owns my debt has put it on my credit report, and it is really hurting me. Is there anything I can do? Thanks...