How do I use an iTunes Gift Card [Canada]? I tried buying a $10 app and it still charged to the credit card linked to the account. (The gift cards' credit is on the account atm- $10.01) Is there anyway to get rid of the credit card? I heard you can't buy apps with a gift card [at least in Canada?].. is this the reason the credit card got charged for that app instead of the gift card?