t-mobile refill cards
1) i am a contract customer and have no use for the refill card, is there any way to use this towards my contract account?
2) can i use it for anything else (i.e. like a pay per use data plan if such a thing exists)?
3) are there any other companies that will honor t-mobile refill card cash?
4) is there some place where one can check the balance of the card (i haven't used it but it is about a year old, should still be good right?)?