I ordered a phone through a line that was upgrade eligible for another line. They said that when I get the phone I call AT&T and get the SIM card ready to be activated for the other line. I called them up and gave them the "IMEI" number. They said that that iPhone 4 was now associated with my other line. However, when I plugged it into iTunes, it still said the original line. The customer service rep insisted that when it was activated it would activate on the correct line. Sure enough, it didn't. It activated on the original line - now I am stuck without an iPhone 4 - I don't have an AT&T store where I live so I can't just get a replacement SIM card. The original lines phone is now deactivated and activated with MY iPhone 4. I now have to wait for them to ship out a SIM card which will take another WEEK. Because of AT&T I am now left without a phone, my iPhone 4 is now activated on another line, and thus have to wait a week to get it fixed. Thank you AT&T for screwing up again, further proving you to be the worst wireless carrier I have ever been a customer of.