What you may be seeing is an authorization. This is a common bank practice handling credit card transactions to ensure sufficient funds and account authenticity. This authorization will clear and you will see one charge for the order you have placed. Please note that your bank may take up to 48 hours to clear the authorization. If you need help speeding up the process you can contact the issuing bank of your credit card.
Please only click the ‘Place Order’ button once during checkout to avoid duplicate orders being placed.