My Data and Airtime Lost

On Wednesday the 25th of November I called the Cell C call center to help me deactivate the BIS plan I was on so that they can activate a new one as I was out of data bundles. The call center agent sounded very rude about how she handled the situation, but over and above that she apparently activated an incorrect service plan (which costs R114) which I am not able to Use. I called the call center 3 time after that so that they solve my problem and I was constantly being told that a line manager or supervisor will call me back in an hour, its been now 7 and I don't have data on my phone and no one has even tried to solve my this issue. I very upset and thinking of switching networks as I will not accept a loss of R114 for nothing in these tough times!!!