Zero star service from Cell C

I cancelled my contract with Cell C last year and received sms confirmation from them on the 31 July 2024 that my number has been cancelled from my contract as requested. Earlier this year I app**** for credit with a bank and was subjected to a credit check. Imagine my surprise when the results were made known to me, specifically that Cell C claim I am in arrears for 6 months on my cancelled contract. Yet for all their claims, not once have they sent me any communication or attempted to call me or otherwise requesting settlement. The simple reason for this is that I owe them nothing. The bank then stated I would need to obtain a letter of good standing and/or an account closure letter from Cell C which I first attempted to do on the 4th April 2025.After been told someone would contact me in 1-2 business days, nothing ever happened. Over the past 6 weeks I've sent Cell C numerous emails (which are never responded to) as well as phoning them several times. Each time I'm told the same story .Cases are simply closed by Cell C without advising you, resulting in me having to open yet another case. The last response I obtained this past Monday was that my account is in credit and that Cell C in fact owe me money. Yet despite all this, this impasse remains and nothing happens. Can Cell C not issue me a letter of good standing so that my credit score can be restored accordingly? It appears not to be the case with all the merry go round they persist with. No doubt a hollow apology will be issued yet again by Cell C with little to nothing been done about providing me with the original request. I have even contacted ICASA who stated they cant do anything as its beyond their jurisdiction. They in turn put me in touch with the National Consumer Commission whose phone and email services do not connect with consumers at all, despite repeated attempts. It therefore seems I will need to employ a lawyer to sort this out as I've exhausted all the channels on offer. This whole episode justifies my past decision to cancel my contract with Cell C-they certainly don't deserve my hard earned money anymore than the next person. Were zero stars on offer for their non existent service , that would have been my submission here.