Bad service!

On 30/08/21, I made a payment of R2500, again 16/09/21 an amount of R2000 and R7000 on 2021/10/01 to a Nedbank suspense account no 1456****20. Two of the first payment are reflecting n my bond account and the last R7000 is missing. I called standard bank and they confirmed that everything is 101% correct on their side, I must check with Nedbank. I made several calls to Nedbank and all I am getting is that my ref no is missing 2 digits so they can not trace the funds. I have been sending proof of payments left right and center, I went as far as to personally go to the branch, but NO ONE can actually help me only because the ref no is missing 2 digits. Phillip Sekwetla who is a Snr Financial Administrator sent an email to Palesa Diale from HL collections informing her that he can not trace the funds despite the fact that I have sent proof of payments. I fail to understand this, the account number is correct, only the ref no is incorrect according to them, but more than 2 of my payments were done in the same manner using the same effort. I really fail to understand this, can someone from Nedbank please look into this matter. Its month end already, and I want to make further payment to my bond, and I am skeptical as I do not know if those funds will reach my account.