No service provided by RCS collection department

During November 2020 ***** was committed on my Game account which is managed by RCS. The game staff and ***** department was very helpful in getting my paper work submitted and getting my case finalised. But the problem that I have been having with RCS's collection department however is that since December 2020 they have been phoning me non-stop to collect an outstanding amount on my account that relates to the ***** that was committed. This account should have been sent for adjustment as my account has been suspended and has not been active since November 2020. The outstanding amount for my account was settled. During the last 6 months I have spoken to 37 different collection agents (who has phoned me 6 times a day) each one not see a note on their system about my case and I have had to send through all the necessary documentation to RCS 7 times. I have had no response from them in regards to whether they have received my documentation whether they are looking into my case and now I have subsequently been handed over to MBD debt collectors which negatively impacted my credit score and left me failing to apply for credit when I needed it. I would thus not recommend anyone to open account with RCS or any entity on which they manage the debtors account if this is the service they provide. I hope someone from RCS sees this review and would have the decency to get back to me in order to get this matter resolved.