Cell c contract not cancelling

So in March this year I called cell c stating that I want to cancel EVERYTHING that I have with cell c . I was given the amount to settle the account . The agent that I spoke to never told me that after a paid the amount I need to call back again to ensure that the contract is canceled. I paid the amount. Month end came I was then not debited. Then I thought that the cancelation was successful. After 2 month cell c tried to debit my account . I was surprised by this then I called cell c to enquire what is going on . Their rude staff told me that the contract was never called . The settlement amount that I paid covered me for 2 month . They then said that I was suppose to call after I paid the amount to ensure that the contract is canceled. I asked them to go back to listen to the recording if I was advised that I need to call back again because something that am not told I wouldn't know. If you come to my doctors office with a aproblem and I don't tell you that you still need to come back you wouldn't know. So they did tell me that indeed that person didn't tell me. Now I must suffer for your mistakes. Another lady who didn't want to listen to my closed my case saying that am ride while she was the 1 who was rude and didn't want to listen to me. Now the finally agreed to cancel the contract last weekend .Now they said that accounts department will call me to tell me how much you will refund me because it was never my fault that the contract was not canceled and I already subscribed to Fibre and moved to Vodacom for a better service. I called last week where the lady on the collection department told me that I owe the amount which I need to pay. Then from cancelation to owing . I have checked many post here on hello Peter and it seems like many people are struggling to have their contract cancelled with cell c. Why is this . Kindly check my request ASAP