Money to be re-allocated to the correct account

I have few accounts with Nedbank and I'm busy paying them off, as I've put myself under debt review to get rid of all my debts. I have paid and close few of Nedbank accounts, I'm only left with two , which is a personal loan and MFC. So on the 1st November I made a final payment to one of the now closed account with Nedbank, then on the 26 Nov 2024 I mistakenly pay R6k on that closed account ***) instead of directing it to my Nedbank Personal loan account ***), with the correct reference number for my Nedbank loan (*** ). Up to now I'm struggling to redirect those funds to the correct account, and both accounts are with Nedbank. I emailed them on *** , on the 6 Dec 2024 so that they can help me to redirect those funds, after several comms with them under this email ***, I was told that I must go to the nearest branch to get it sorted.

On the 23 Dec I went to Nedbank Montana branch, they checked all the details , proof of payment and I told that it's a corporate account and they are not allowed to touch it, they recommended that I go to my bank, TymeBank , to reverse the funds. I did that but Tymebank responded after a week saying that they didn't get authority from Nedbank to reverse those funds and due to POPIA they are unable to share to details.

So now I'm stuck, Nedbank loans department is calling me now and then as they want a payment, when I explain to them they are saying that's my problem, I must sort it out, they just want their payment. So now I don't know how to get this issue sorted because the money was paid to Nedbank but on the wrong Nedbank account which was mine that I have already paid it off. Can you please assist me in this regards.