Cell C Contract not canceled

I've requested a contract cancellation on the following number *** on 27 October 2015. <br> <br> The contract was scheduled to be cancelled on 27 November 2015. <br> <br> Cell C has not cancelled my contract and loaded data for the month of December 2015 which I have to pay so I used this data.<br> <br> I've called on 14 December 2015 to enquire why my contract was not cancelled. I was told there was no record of my call and no record of my cancellation request. The operator told me that she requested a recording of my call on 27 October 2015 and will contact me but there has not been any contact since.<br> <br> I've called Cell C again today and was told that my contract will be cancelled on 14 January 2015. This mean data will be loaded on my number and I will have to pay for a full months data. <br> <br> The error was not made on my side but on Cell C's side and I have to to pay the price for their mistake which I think is unacceptable.