Supersonic Puts People on a Debt Collection List When their Account is Fully Paid

Supersonic is ********* and ignores requests from customers. They also don't provide effective channels for customers to get issues resolved: They have put me on a list for debt collection when I do not owe them any money. Several years ago I signed up for a Supersonic Account for my mother in law's house. I signed up in my name and paid for it every month. In May 2023, she passed away and in June I cancelled the account. I didn't receive any more accounts from them and forgot about it. Early in 2024 I received a call from debt collectors. They told me that I owed Supersonic money (around R845) and that because I hadn't paid they had handed it over to debt collectors. I called Supersonic and spoke to them. The gentleman at the call centre admitted to me that they had not sent me any account and that they had wrongfully handed the account over to debt collectors without letting me know. I immediately settled the account (April 2024) and thought that was the end of it. Throughout 2024 I continued to receive calls from debt collectors. Trying to explain to them that the account was settled was to no avail. They kept on calling. In November last year I once again called Supersonic. They assured me again that the account was settled and told me that they would ask the Billing department to get my name removed from the list given to the debt collectors. The ticket was SST415729. This was closed a day later with no other feedback. After a week or two the calls from the debt collectors started up again. The debt collector calls have continued for months and now ramped up again significantly. Today (23 April 2025) I called the Supersonic helpdesk again. I was told (once again) that they would ask Billing to sort the issue out. The ticket number was SST658652. They assured me that somebody from Billing would contact me today still. Not surprisingly the ticket which was raised at 08h30 was closed again at 9h43. Nobody contacted me (as I expected by now). I tried calling them several times after that. In essence I was told that I can't speak to anybody from Billing - its not allowed. I am also not allowed to come to their offices to sort the matter out. They won't let me in. All I can do is call their call centre and work through them. I told them this has been going on for over a year now. They didn't care. I spoke with a lady called Judith. The call which I logged at 08h30 this morning was closed an hour later with no feedback from anybody or any assurance that my name is being removed from the list. So here I am on a debt collection list, when I don't owe supersonic any money and this is all due to Supersonic's incompetence and ********* practices. What if this results in me getting a bad credit rating? I would like to advise anybody against using Supersonic as they are ********* and are unwilling to correct the errors which they are responsible for. All I want is an email from them with the assurance that my name has been removed from the Debt Collectors list, and they are not even willing to do this - which is their job!