Payment still not credited accordingly

Hi, so my account was handed over to VVM, I have made payments with them before and received statements confirming my payments. On the 28/04/2022 I made R5000.00 payment to VVM and didn't receive anything. I called them only to discover that my account was sold to the NIMBLE group on the 08/04/2022 and no one told me about this new development. I asked about my 5K payment VVM said Capitec and Nimble are the ones to sort this out and transfer the funds accordingly. I then called nimble and they told me call capitec. I spoke to an agent at Capitec (CCS) who said to email all documents and POP which I did and I haven't received any feedback.

I would like to pay for this account and its not fair on me to make an arrangement on a balance that should be lower than it is. The money has still not been credited and I'm still stuck on that high balance. So did I just give away R5000 for free? I want to make another payment this month but not sure where to pay and how much is outstanding on this account.