Troubleshooting Error #0 in World of Warcraft
What to do if your payments with these virtual cards are not completing successfully.
Expected payment processing and product delivery times for PayU boleto orders.
Information about why you may receive this error when you're attempting to make a purchase.
It is not possible to refund the gold spent on accidental purchases of skills
Information about this error message and troubleshooting steps
What to do if you buy a character boost but you don't see it the character selection screen or it doesn't boost your character when you use it
More information about heirloom refunds
Troubleshooting for in-game shop issues on Mac in Burning Crusade Classic
Information for tax-exempt organizations making digital purchases of Blizzard games and other digital products