"I have purchased ATT Lumia920 under contract and purchased unlock code for CellUnlock.net. I got a confirmation email about the order placed then the seller went into isolation, no response to emails (I have sent around 6-7 emails, one of them requesting refund) called their toll free and all the numbers listed multiple times and got the answering machine no matter what option you choose (like Customer Service, Sales etc.). I was planning to dispute the charges through the Credit card I paid. May 9th, when all the world knows that ATT is providing unlock codes free of cost, mine costed $40 USD. I would not use this site again or suggest anyone to use it."