How to receive help with balance codes that cannot be read
How to solve this problem on an incomplete Battle.net account
Information about using pre-paid credit cards for Blizzard purchases
Information about where to purchase Battle.net Balance scratch cards, gift cards, or codes.
What to do if you can't claim a Battle.net Balance code because the currency of the code doesn't match your currency
How to find your CVV code
Payments in the Blizzard Shop cannot be split between two payment methods.
Information on error BLZBNTBNA00000131
Troubleshooting steps to save a credit card in your Payment Methods page
What to do if the serial number at the back of the physical authenticator is scratched off