Money transferred into the wrong account.

I just received a very bad service from capitec this morning because I have a situation were I transferred money for my rent to a wrong number accidentally and I went to capitec with this problem to ask for their assistance in reversing the money also with proof of the transaction, to my surprise they could see the amount reflecting on that wrong person's account but couldn't reverse the amount and said that they need to get authorization from that cardholder to reverse the amount which I couldn't understand because the money doesn't belong to the account holder and it was transferred by mistake. Can I please get some assistance on this matter because right now capitec as my bank can't help with anything and I'm scared that the account holder might get hold of it and use it as this is the last thing I don't wish for it to happen.