I cant find any differences of that and a Samsung model Gt-S756CM... (I think.), except that the basic scroll snd command listing request control (on the left the first on the right) are like a reversed embodiment (I dont know what its xalled) the command icons on the command button are raised up.
If you purchased the phone from Wind Mobile, you can definitely bring it to them to get assistance in getting your phone repaired. But if you purchased it elsewhere, you need to contact the store you purchased it from.