I'm returning a iphone 5S to TMO since I bought a Moto X. They are charging me a $50 restocking fee. Does the restocking fee cover missing items or would they charge me for a missing charger? My wife likes her iphone 5S and only I am returning mine but it never hurts to have an extra charger around so I thought if they are charging me $50 for the return maybe I should keep the iphone charger.