5 Mtn Consultants, still no Customer Service

I have home WiFi. I received a notification that my fee would increase by R130 even though connection is unstable. I receive another SMS for a cheaper package. I call Mtn to migrate to the cheaper package but get passed to 5 different consultants each telling me they are not the correct department - even though I am clear: I'd like to migrate or cancel. My fifth consultant (that I called on ***) gives me the number *** ... which, when I call, I get an automated voice that says It does not exist. This is TERRIBLE customer service. A waste of time and I am more convince, a waste of money for the package I have. Is there an Ombudsman that regulates these service providers?