Cancellation of contract

I have gone to the Vaal Mall branch to cancel my contract on 24 May 2015, they said it would be cancelled within 21-30 days but the sim is still active today, now I don't want to use the phone but I am going to be upset if another payment goes off, of R1200 and I could of used the phone as I have then paid for it. Switch off the sim now and stop the debit order as I will not pay for another month as I asked twice for the service to be cancelled. I am not using the phone as I asked for cancellation. The first ref number was ***7 and the second ***5 on 05/07/2015. I am not going to stand in a queue again to ask for the same thing again.<br> <br> Thank you.