Very Bad Service DMC Hannalore Kock

I am currently buying a house and was shocked to learn that there was still an account outstanding for me at DMC after I was advised in 2022 that the account was closed (I wanted to settle it at that stage). I called DMC on Friday 16/02/2024 and was informed that my settlement amount will be R6000.00. They send me the banking details with the refference that I should use. I immediately went on my Banking App to pay this outstanding amount. As soon as I tried adding the beneficiary it gave me an error (several attempts) and advised me that this is a Public Recipient and prompt me to use the pre set up Recipient. After doing the payment I send that proof of payment to Hannalore Kock who called me back and told me that I used the incorrect banking details. I explained to her that they are a Public Recipient and that the banking app is already set up with their information she is however not interested in what I have to say and it seems as she already decided she will proof me wrong and not assist me further. I spend Saturday between banks trying to sort this out but was not successful. I went to the bank again this morning and spend 2 hours there again to resolve. The lady at the bank tried assisting me by calling DMC Hannalore Kock took in the same no care attitude with her. The more the lady at the bank tried to explain to her that the account number on the proof of payment is a number allocated to DMC as Public Recipient the less she was willing to try and resolve this. Hannalore Kock was rude through the whole call and at the end referring to me told the lady at the bank "He can sort it out" which I have been trying to do since Friday with no assistance from DMC. This is R6000.00 which I paid to get resolved yet I am being treated as a ******** by DMC. It is a lot of money for me so I do not feel that it is fair that I am treated this way.