How do I remove my credit card details for my Apple account?
I have $50 credit and when purchasing a book it ask for my credit card details. I don't want to pay again. How can I remove credit card details?
Go to iTunes
Hit the name of your account (on the top of Mac iTunes Store; scroll to bottom of featured page on iPhone, iPad, or iPod touch)
Hit view account
Enter your Apple ID password
Hit payment information