Edgars Please Close my Account and Stop Billing Me!!!!!!!!!!

I Settled my account with Edgars on the 28th August 2020. I phoned beforehand and was told that the amount is valid for 5days and after payment my account will be closed. I also phoned Jet Club and cancelled that service. 3 Weeks later, after settling the account, i received another invoice which included Jet Club and service fees. Highly irritated i paid that amount and phoned 3 times, got 3 different reference numbers and was assured that my account will be closed and within 48hours i will receive a paid up letter because on my credit report the full outstanding amount is still showing. Yesterday i phoned again for the paid up letter... now i owe them R80 again... Edgars is milking me for money after i settled the account and i kept on asking for the recording of the calls and they cant send it to me and absolutely no one phones me back. Edgars what must i do to close my account and stop from paying?????? I had a feeling things would go sideways when RCS took over... who can i contact to help with this issue or should i take the legal route because its becoming ridicules!!!!!!!!