No response from Vodacom to a request to cancel a contract.

I have been trying to cancel a contract for a week. Disgustingly the initial response was that it is only cancelled when they respond. I have submitted multiple times and the comment from Tobi is that the response will take 2"hours. Tobi is a AI ****. When I said I may want an upgrade on my other number a call centre person phoned within the hour. Worse than Telkom.....