Usually a cancelled or unfulfilled order means that payment could not be made. Sometimes this happens if the delay is too long to enter the security code of the credit card, or if you have reached your debit limit. We invite you to try again, or use another credit card, or try to choose payment via Paypal or bank transfer.
In any case, if your order is cancelled, it means that your order has not been registered and your bank account has not been debited.