"Untraceable" Virtual Card Transaction.

A while back I noticed an outstanding debit card authorisation for the amount of R104.10 on my bank account. Despite this, nothing showed up in the "Pending" section of my bank account. I contacted the FNB ***** department since it was after hours who advised me to cancel all my virtual cards, which I did. But they were unable to tell me what the mystery transaction was for.

I contacted the bank themselves during business hours and they STILL cannot tell me what this mystery transaction is for. Instead they sent me a dispute form which not only doesn't have the correct option, but which also carries the risk of my main card getting stopped for no reason.

I thought virtual cards were supposed to be safer, yet you can't even trace the transactions until they're claimed, but you also can't release the funds after they're reserved.

This is a bank account, not a Bitcoin Wallet!!! This makes no sense at all.

All I want to know is what the transaction is for, so that I can decide whether or not it's *****ulent, or not perhaps a temporary reservation to verify a payment method on one of the many platforms I've used. That said, if it's the latter, it should have been reversed ages ago!