No feedback and no one to speak to

I have had a Telkom Mobile contract for a few years and I decided to end it. After speaking to them on the telephone they sent me a form to complete and send to a certain email address. I did all this and have not heard anything at all in response. I went to the branch in person and was told that they do not deal with cancellations that I must phone. I phoned and they said they cannot get any information on what the cancellations dept is doing and told me to email the cancellations dept. I have sent 2 emails and still no response! I phoned back and they said the dept only works through email and that there is no ways of contact besides email!! So how do I know what is going on??? How do I know that all is in order??? I have kept all this as proof and asked them to record my last conversation as I am closing my specific bank account that the debit order comes off and I can prove all my attempts to sort out, including now Hello Peter. It is too much to ask simply if all is in order and get some sort of feedback as to how the contract will end, the exact day etc etc?