Contract Cancellation

I have an existing data contract with Telkom which I decided to cancel after signing up for an uncapped ADSL deal. I walked in to The Menlyn Telkom Store on the 17th of September in order to notify Telkom of my intentions to not continue with the contract as I deemed it surplus. I was then informed that cancellation can take up to 30 days, to my surprise I am still being billed up to this day and still receiving data even though I have no use for it anymore. I would kindly appreciate if my contract was cancelled and my money to be refunded. Thanks <br> <br> Case Number given is ***3 or 17/13383.