cardless withdrawal

I requested a cardless withdrawal with nedbank app, but i couldn't withdraw it. When I called Nedbank two weeks back about the issue, they said they will reverse the money as the was an error in their system. after 4 working days I followed up with them, the agent told me my details were put incorrectly, so my case was still pending investigation and that investigation will start all over, so I will have to wait another four working days for me to receive my reversal money. this was a horrible service from Nedbank..