You can pay via IDEAL or BACS, or direct bank transfer. In the latter case, transfer the amount to account number NL89 KNAB 0259 0643 51, mention Four Pillarz, stating your order number. Once the amount has been received, your order will be processed.
After your order you will receive a confirmation of receipt by e-mail. It may be that it ends up in your SPAM box, so also look there if you cannot find the confirmation.