Cancelation and Awful customer service

I have never experience so awful customer service ever!! i have multiple contracts and when it has finally come to the end i want to cancel it. I called in 1st of may and the agent told me she sent in a request - i then checked my account and they charged me on 31st may. i then called in thrice and the first time the call cut out and nobody bothered to call back. the second and third time knowing the cancellations department is closed both agents transferred me knowing im going to get no solutions, I was transferred to 3 different agents with no result. The third lady spoke to me with so much attitude and disrespect and was so condescending towards me i literally want nothing to do with Cell C anymore - my mother will be canceling both her contracts as well.