We accidentally refunded to the customers another card using 'Manual Refund' function.
We only did put the informations that card number, amount, expire date, cvv, zip code on 'Manual Refund' menu.
In other words, we applied a manual refund to the card what had no payment.
The customer said they still haven't received the refund money on their card,
But in my account, the money has already been withdrawn.
How can has proceeded manual refund without payment transaction?
And how can we do for adjust it?