Unauthorised payment

Nedbank credit card decided to put a payment through of R70 470.07 to my cheque as payment???? This without ANY authorisation and after paying my creditcard on 15 Feb 2023!! I called their customer care line on Saturday 18 Feb 2023 at 06:00am to report this to which I was told I can reverse it within 24hours. It is now Sunday evening the 19th of Feb 2023, 38hours later and I can still not do the transfer. Thank you Nedbank for being so utterly unprofessional and leaving me with absolutely no money. I hope you loose a lot of clients, you are loosing me for sure.