My credit card, bank account or PayPal has a charge from Blizzard that I don't recognize.
The Blizzard End User License Agreement explains what you may and may not do with a Blizzard account. This article highlights a few passages from the EULA that are most relevant to this policy.
A temporary pre-authorization charge may be applied when making a digital purchase.
Information about authorization holds in your bank statement
Troubleshooting problems charging your Blizzard Balance
International Gear Store purchases may be charged customs fees and duties for delivery.
Pending charges generated from PayU failed orders.
Information on paying for pre-order items.
Information on free shipping restrictions
Information about common payment issues and troubleshooting steps