Money disappeared from my FNB account

I have recently been keeping my money in my savings account and only transferring into my cheque account as needed. On the 31 Dec 2024 I made a payment using my virtual account, I transferred money from my savings account for this to go through and it did. 3 days later I logged on to my account to see that my account is in arrears by exactly the same amount as the payment that I made. When I first queried this via the secure chat no one seemed to be able to assist, I tried the call center as well and was sent from pillar to post to different teams. Finally one agent was able to see this 2nd payment as a ‘pending’ transaction on their side but could not assist furthe. I sent more queries via secure chat and another consultant first denied seeing the transaction then later admitted to seeing it and asked me to forward screenshots for her to escalate. I received no follow up from this and I still have no details as to what happened but they have now ‘corrected’ it. Make sure you are aware of money leaving your account! The 2nd payment that was supposedly made had no trace via my transaction history.