2 and a half weeks ago i bought a tmobile iphone 5 on ebay and activated the phone, the phone service was working well up until today when my phone came up with no service at the top left of the phone. I called t mobile and they told me the phone has a blocked imei because the previous owner didn't pay a previous bill or something like that. Now im stuck with an unusable phone. I contacted the previous owner and he claims he called tmobile and they told him there is no balance for him to pay and that the phone imei is good for activation. I dont know what to believe. What should i do? Has anybody here encountered a situation similar to this one?