Report Issues....

On the 1st of April, I`ve paid money to a Capitec account that was the wrong account( paid using their cellphone number) via my Capitec app, when i realized i made a mistake i immediately reported it on the app, after i waited a day or so, Capitec emailed me back saying saying that the case is closed they cannot resolve it. So i then whatsapped the person i send the money wrongfully to and asked for it back... patiently waiting .., after time i got a response and the person ( i have their name and surname ) said they used it... they will pay back month end.... so i left it and waited.... today i reported it again via my app... i believe Capitec did not investigated it properly , cause they did not even phone or anything to asked me exactly what happen... Capitec did not do their due diligence at all, me as a client for more than 10 years.... What else must i do Capitec ? What do you need from me to block the persons bank account and make sure i get my money back ??????????