Unprofessional service at MTN Lambton

I have been struggling since January 2021 to cancel one of my contracts with MTN. I am currently not using my 3G but still pay every month. On many occasions when I call MTN to cancel, they either have a slow system or no system at all. Sometimes they tell you that they will get someone to call you back but they don't. They answer quickly but when put through to the MTN Cancellation Department, it is a total nightmare. It is as if MTN does not want to cancel contracts. It is a total frustration. On 14/09/2021 I held on for almost 2 hours on the phone and still no answer. On 15/09/2021 I went to the Lambton, Germiston branch where I do all my business with MTN. But now I am told that they do not do cancellations and that I had to call MTN on 135. There was 1 female MTN employee half lying on the chair. When I told the lady at the door that I am not getting any assistance from the Cancellation Dept., the lady lying on the chair laughed. It is so frustrating to be turned away and not getting any help from MTN call centre. When I left the shop, she was laughing from her stomach, almost screaming with laughter. After all these years I have been with MTN I was never treated like this before and was in disbelief of what I saw. I feel like cancelling all my contracts with MTN and do business elsewhere as they are utmost unprofessional employing staff like her. She does not belong in that shop!!