When you place your order an Authorization Hold will appear for the amount of your order. You have actually not been really charged yet!
As soon as your order ships the actual payment gets captured and the Authorization Hold should fall off your account soon after.
You will not get charged for canceled items due to licensing/copyright rejections or for out-of-stock cancelations. Your order will get canceled or we short ship the remaining items on your order.
You will only get charged for items shipped.
If you have any questions please contact us at firstname.lastname@example.org and we'll be happy to assist!