unauthorized Telkom debit order

this has been the worse experience of my life, i ordered a telkom mobile data contract online on the 10th of October which i received my package a week later. I was informed the courier guy would Rica the simcard which he never did, i called telkom multiple times which they failed to Rica a simcard. i went on store at the Mall of Africa Telkom store which i was told i need to R800 cancellation fee to a contract that was never active which i did on the 25th October 2019. till today this contract is active and telkom has been debiting my account for over 2 months, I have called multiple times *** which i was refereed to 081180 the call has gone unanswered for multiple times! Telkom what must i do for you to stop debiting my account? I DO NOT HAVE ANY SERVICE WITH YOU!