Telkom procrastinated my cancelation so I would go over my 7 day cooling off period

My LTE contract number *** expired end of Feb 21 Telkom phones me to upgrade blah blah. They then give me a deal for, in my cooling off period I didn't want this deal, I wanted a better deal. The agent said he will come back. So he did not come back to me with any info. After my 7 days, the 11th March, I used my own airtime to phone in again and I could not cancel my subscription contract. The next agent upgraded me again with the reference ***A. I'M STILL NOT HAPPY WITH THE NEW UPGRADE AND DON'T WANT THIS TELKOM CONTRACT ANYMORE!! SEEN THAT I FIRST CALLED WITHIN MY FIRST 7DAYS AND TELKOM DID NOT RESPOND, ITHE FAULTAYS NOT BY ME IT'S POOR MANAGEMENT FROM TELKOM SIDE. I'm not willing to pay for Admin fee etc to cancel this contract. They should have canceled it when I wanted to cancel it. I'm very unhappy where I had 2 contracts with telkom for 2 years and this is how they try to make more money out of a person. If I'm not allowed to cancel this contract by not paying the admin fee and cancelation I will stop the debit order at my bank.