Telkom mobile contract cancelations

I recently attempted ( with the emphasis on attempted) to find out what it would cost me to cancel my Telkom Mobile contract (Wanted to move to ADSL but apparently this is not possible). I called the call centre 081180 and was referred to the nearest Telkom mobile branch. At the branch I received a quote for cancellation of 3 times the amount I still owed on the contract!!!!!, but was told by the agent that it is usually incorrect but that is all info they can give me. I phone call centre again and after some convincing the call centre agent agreed to send an inquiry to cancelations to get the cancelation figures with a promise someone will call me back with this. Now some three weeks later after several calls further I am still waiting for this call. It seems that with Telkom mobile the only way you can get a cancelation amount is to actually cancel the contract and hope that you will actually be able to afford the amount given to you for cancelling.