My balance is not showing up in app store when trying to make a purchase
Hi, I just loaded my apple ID account with some iTunes gift cards that I bought. The new balance shows up in my Apple ID, but when I tried to purchase an app from the App store, there's no option to select that as my method of payment. As a result, I accidently paid with my credit card instead for the app. I delibrately waited to buy the iTunes giftcards when they finally went on sale, and all that effort just wasted. Please help so I'll know for future purchases.
MacBook Air, iOS 6.1.4, App Store