I am a user of ATT GoPhone since a week. Unfortunately, today my sim is blocked. I need the PUK code to unlock it. It seems that I can find the unlock/PUK code in paygonline.com. I tried to register myself at this site, but I cannot select a state and country. There is one item in the select box and that is 'Select state'. So this doesn't work for me. Is there another way to receive the PUK code? I am unable to call customer service, because my phone is locked.