Poor service

My name is Gibson Majola, from the beginning of December 2018 I phoned cell c regarding the cancellation of my contract, the consultant I spoke to told me that I have to wait 30 days for my contract to be cancelled and the last payment will be end of January. Beginning of February I received benefits (Data and minutes) I then phoned again to ask why am I still receiving benefits while I cancelled my contract I then requested to speak to the manager who introduced himself as Brian the supervisor since the consultant couldn't help me. Brian cancelled my contract and took all the benefits for that month . To my surprise money was withdrawn and I had to reverse the money since my contract was supposed to be canceled. A few weeks ago I then received a message that my matter as been taken to credit burea and I'm listed as a slow payer. I phoned once more and I spoke to Brian again and he promised to send me the Audios that I did cancel my contract the next day. I've been waiting for more than a week now and I haven't heard anything from him. He also told me that am not liable to pay for the month of February since I cancelled my contract on December. I am unhappy with the treatment that cell c has been giving me. To top it all off my credit record is now affected by all of this when I took the necessary steps to cancel the contract on time since I was not planning to upgrade. I honestly don't know what to do anymore as I've went to the cell c outlet, called their head office and even sent them an email, which even today they have not responded to.