RCS Refuse to assist

Last year due to the lockdown I was unable to pay my Cape Union account, RCS handed me over for collection. I June this year I was able to make final payment and have received the relevant documentation from the collection agency to prove that I do not owe them any more money. It has now been 39 days and the black mark on my credit record remains. I initially called VVM to query and was told that due to short staff RCS have notified them that all correspondence takes 22 days to process. This week after losing patience I have started calling RCS to query and they are completely refusing to assist me, when I call they usually end the call before I even speak to a human and when I do get to speak to someone they always say they cannot help me and I must call VVM again.

At this point I am fuming angry and have lost all patience with this process.