R536 disappears from Capitec Account and no one from Capitec can give answers

I went to your branch in Woodmead,Johannesburg on the 01st of March 2022 regarding R536 that vanished from my Credit card account. The guy who was assisting me did not know how to explain the issue, and told me I must go home he will call me back later on the same day. Today it's the 08th of March, and no one has called me back. I was given reference number ***9. I have ran out of patience, all I want is someone to tell me what happened to R536. This is not the first time this happens, previously it was in smaller amounts, but it raised eyebrows when R536 just vanished and not shown on the statement. No one was able to give me answers, and I want the entire account auditted.