Unpleasant customer service and rude consultants.

I’ve had an MTN data sim for about 6years now. In January, I contacted MTN and advised them on terminating my contract. I spoke to a consultant & was advised on the amount I needed to pay in order to terminate my account which I did. To my knowledge, my account was then terminated because I stopped receiving communication from MTN including monthly statements so I assumed all is well. Few months later, I receive a statement that says I’m in arrears as I have missed payments. I call back MTN and they advise they see a lump sum has been made but the account is still active. My only mistake was not acquiring a ref number when I spoke to multiple consultants on closing my account. It doesnt also help having rude nonchalant consultants. The system worked so much better when we could close accounts in-store because calling the rude customer care isn’t seem to be working in the customers favour. Now I’m stuck with this account that no one is willing to close & im not willing to pay either because to my knowledge, I’ve paid it up in January 2025.