Cancellation of contract

I have an existing data contract Telkom mobile and the contract ended in November 2015. When the contract ended it was automatically switched to a 1 month notice without my approval. I approached the Service Centre to cancel the contract, they told me to download the cancellation form from the Telkom Website. I filled cancellation form on 01/02/2016 and I faxed and emailed to the cancellation department. I received message confirming that Telkom would contact me within 48-72hrs, but Telkom hasn't contacted me. On 19/02/2016 I called to enquire about the status of the upgrade only to be told I must wait 21 days. Today I called again this time to be told that I must now wait 30 days! but until now I haven't been contacted by Telkom to cancel the contract. I am very disappointed with the service being offered by Telkom Cancellation Department. I want this contract to be cancelled and I don't want this service anymore as I have very poor service connection. I am really tired of the run around and poor service.