Wrong card charged, penalty added

I have been trying to resolve an incorrect payment issue with PayJustNow support, but I am not getting a proper resolution.

I had two active orders and intentionally initiated them using two different cards so that each order would be paid from the correct card. However, one payment was deducted from the wrong card, and the next payment then failed. I have provided proof of the original card used, but support keeps repeating the default-card policy instead of resolving the actual issue.

A penalty has now been added to my next payment while this matter is still unresolved, which I believe is unfair.

I need PayJustNow to remove the penalty, resolve the failed payment, and confirm in writing that this will not negatively affect my account or scoring.