MTN SA Customer Service

As a 20-year client of MTN SA, my recent experience has been both disappointing and appalling. A simple SIM card swop has taken 3 days and still not activated. Numerous calls and enquiries have yielded no results to date. | There is no access to line management and complaints seem to be ignored. Furthermore I am on the 'old legacy' platform and not been transferred to the new platform. This precludes me from being offered any of the new deals! It seems like MTN SA is uninterested in customer service nor loyalty. Maybe its time to move on!!!