Mission Impossible 2

I wrote a complaint in December labelled Mission Impossible. Nothing has been done after this. I spoke to Zanele on 28/12 and queried the amount that she was quoting for cancellation as this was not what was discussed as per my previous post. She advised she would listen to the calls and revert. A week later 04/01 got a call from a supervisor who advised me of the amount again. Nothing had been done to listen to the calls and check what amount I had been quoted. He advised he would investigate and revert. More than a week has passed, another D/O has been taken and still no Feedback.