disappointed customer

i am actually angry, this morning an amount of R193.47 went out of my capitec account...i went into my banking app trying to reverse it because i dont know where the debit is from....i was unable to do that then i call their ***number to ask them to reverse that debit and the consultant told me that it shows that its still pending on their side she cannot reverse it, whereas money is out of my account....how is it possible that our monies are compromised at capitec and yet we trust them to keep our monies safe....it might be a small amount but its mine and i worked hard for it....CAPITEC please advise what needs to be done in this instance....but what i can say is you are failing us as your clients