Completely inaccurate account statement

My account is a complete mess, with getting a statement in June with a NIL balance and attemyingbto confirm this, which I couldn't...I didn't pay anything. I then paid on the 2erd July, having received no statement. I then get a threatening email claiming I did not pay in June after receiving an account at the time with a NIL balance!! My phone was disconnected as well. The entire accounts dept seems to be working from home I am told, I wonder? The staff at Cresta MTN are rude and disinterested. I applaud the lady at Ferndale on Republic MTN, who is kind and attentive. MTN customer service has always been appalling, lockdown or not. As a customer of 21 years, I recall the early days when MTN was fantastic and am saddened at what it has become. Need to find another service provider but I fear the result will be the same. Customer service is not considered a necessity in this country, sadly.