CELL C:- Pathetic to say the least

On 15th May 2019, I called Cell C to give notice to cancel my Cell C contracts on 16th June 2019, as per the contract. This is purely due to poor service, poor signal, as we continuously have to shuffle between roaming and networks to get signal. I have given up with technical centers, as they come up with the same lame excuse of knowing about the problem, and are working on it. Getting to the call center, having answered the security questions, I was told that I would be transferred to the cancellations Dept. The next thing I hear is the computer voice telling me that the number I have dialed IS NOT CORRECT!!! I had to hung up and phone again, with the same result. Third time I told the operator NOT tot put me through to this dept, and explained the whole story. She told me that she would now correctly transfer me..........SAME story!!! The I phone on my landline, same story two or three times. I then requested my wife to go the Cell C shop and request cancellation at the store............SAME STORY, and was told that they can not request by any other way apart from the route I had taken the whole day! CAN you believe it!!!! Also, that I had to phone, as the contract was in my name. So, getting home I phoned, with the same result - NO ASSISTANCE AND NO PROGRESS!!!!!!!! During the day, I also requested this via e-mail, and for somebody to call me back. SO now I am playing the wait and see game, whether somebody from CELL -C(*******) will call me back.