MTN turns a blind eye to companies misconduct

MTN have 3rd party sales representatives that are not accountable to MTN!! I spent over 8 hours on calls to ignition group believing that I had successfully upgraded and signed a new debit order. Amount agreed goes off in November. December MTN debits a smaller amount and then I get a notification that my 3 lines are suspended and I now owe R2 500!!! I then have over 6 different consultants calling me to upgrade my lines when I believed I already had!! I am forced to pay the outstanding R2 500 before my lines can be open to call. As a business I have no choice. This is a gross misconduct of justice and MTN should be held responsible for any third parties that they entrust to do business under their umbrella. I expect MTN to refund my R2 500 as this was not due to my mistake! How can you allow third party companies to take advantage of your loyal customers?! How can there be no consistency in service!?