Capitec dont want to reverse my money

I made a online payment and notice that I made the payment to the wrong account. From a capitec account to a wrong capitec account. I have all the proof that I made the payment from my account and to who it must go to and all. They refuse to reverse my money. I am human I did make a mistake. The branch even showed me what mistake I made..so they self can see it was a mistake on the capitec banking app that I made. What right do I have as a customer by capitec if the other person's right is in tact . This is so unfair. So there is plain simple no security for me with capitec. All other banks can do reversal if the money reflects in the other person's account..will only cost me a fee and they will reverse.