Telkom refusing to cancel my contract for the last 6 months!

I have been trying to cancel my telkom contract for the last 6 months. My contract ended in December and in January I contacted telkom and asked how to cancel. The agent: Gugu Pride Ntunja told me on 5 Jan 2018 to complete a form and send it to the email address: ********** I did that a couple of times but no response. I then sent in a complaint where they told me I need to add a copy of my ID to it. So I did that and received another email address ********** to email that too. So I did that over the last few months. Then I went into a chat with a Telkom agent and requested it to be canceled. He said that I must send him the proof of me trying to cancel it over the last few months and so I did. My contract has still not be canceled!! I am beyond angry at the money being ****** from me every month and would like advice on which tribunal I can contact about this.