Aion does not offer a Bancontact system or cards, only Mastercard Debit cards. As such, its transactions are not managed in the same way as with other banks.
Unlike Bancontact, which captures transferred amounts immediately, Aion first authorizes each transaction by blocking the transferred amount and capturing it only after verification is complete.
As a result, if your transaction is refused, not only will it not be confirmed, but your funds will be put on hold for up to 7 days before being returned to your account.
While we cannot take any action in relation to your transaction, we recommend that you contact your bank about your problem, or that you use another deposit method available on our site.