Hellopeter and MTN

I advise people to check any company for negative reviews before doing any transaction with them. My concern is that especially in South Africa none of the company's does not respond or act on these complaints. For example, have a look at MTN with whom I personally had very bad experience and arrogance from all their so-called help line. I cancelled one of two MTN contracts (early cancellation and paid more than R900 on 23rd January 2023) eventually the line was transferred to prepaid on the 7th of March but still get billed R234.50 for the 7th of March. Bottom line I personally will never do any business with MTN