I placed an order online using a credit card and now I have 2 (or more) charges on my card, why is that?
Adafruit's policy with credit cards is to charge only when the items are shipped. That means that we "pre-authorize" the card when the order is placed and actually charge your account when the order is shipped. A pre-authorization is a temporary hold to verify that funds are available when you place an order. For some cards the "pre- authorization" appears as a separate 'charge' on the statement and disappears a few days after the order ships. That means that if we ship your order quickly you may end up with what appears like 2 charges. Pre-authorizations are typically removed from your credit card transaction history when the full charge processes and funds are withdrawn. However, in some cases, this process can take up to 4 business days. …