MTN completely ***********

I have been a customer with MTN for many years. Last week I was called and upgraded my contract over the phone. Since then I have been unable to receive calls. Which is distressing when you run a business of said phone and the message is that the number no longer exists. I have spoken to no fewer than 12 call centre operators. I have been bounced between departments who all want to bounce me back to the previous department. I have logged no fewer than 3 tickets. Each ticket can take between 24-48 hours to be seen to. It has been escalated. Apparently in the 21st century there is no way to contact the back off other than with a ticket. So I am stuck paying for a contact that is of no use to me. I get no feedback and just get told ‘sorry for the inconvenience’ all for a problem that they recreated.. There is absolutely no urgency or any other pathway where I may get some answers. Shocking is an understatement. Would highly recommend using another supplier.