Impossible to cancel Telkom landline account

I’ve been a loyal Telkom customer for the better part of 20 years. I tried cancelling my landline with no success. Attempt to contact them were fruitless. I eventually got assistance at their Table Bay Mall where they confirmed that the account has now been cancelled and that there were no outstanding payments . This was in May 2024. To my surprise I received an SMS saying that my account is outstanding. This time I managed to interact with their WhatsApp bot but all it did was confirm that I am in arrears and I received an SMS confirming that someone will call me back. No one has called me back in my initial attempt to resolve this matter and nor now. Telkom, in its attempt to digitise its processes has lost sight of how to service it’s customers