Hello. I buy just one book, but you take mone twice :( See the attach.
One of those charges will be a temporary authorization charge that will drop off in a few business days or less. If you contact your bank or credit card issuer, they should be able to verify that one of the charges is as I've described. If, for some reason there is a duplicate charge, please send your order number and any other relevant information to firstname.lastname@example.org and we will investigate further.
Sorry for any inconvenience this may have caused you.
Customer Service Rep,