T-Mobile Company T-Mobile Rebate Offer I send completed information they require .But they still denied and even call and say don't know IRVING Texas

 I upgrade my two handset phones date 2/11/12 and get rebate card in Valentin's Sale with 535.98 US. 2/16/12 I send all papers they requiter for rebate. After 6 weeks I received two letters denied  
rebate with reason account was not activated . I was called 1-877-311-8853 but unsolved problem.
  _ The store I purchased no help.
  _ T-Mobile customer services help with hanged around an hours and hang up phone. And I call back
 It was same situation with 3 days call. I don't know what to do .
  _  I want  e-mail to big boss of T- mobile company but I don't know his e-mail address.