Cancellation of contract not processed

What bad service- My Telkom data contract ended and I asked to cancel my Telkom services completely. I did the cancellation request online, over the phone and even went in store at Telkom Fourways to ensure that my cancellation request was processed- the store assistance assured me that it was and thus I would no longer be debit ordered. This is the 2nd month after my cancellation that I’m being debit ordered. I want my money back. Telkom your service sucks- that’s why people keep leaving!