Contract Cancellation Misery

I am writing this because I am very unhappy about the cancelation. My contract states "RIGHTS TO TERMINATE" The subscriber may cancel the Contract prior to the expiry of the initial period on 20(twenty)Business Days written notice subject to payment of reasonable cancellation fee...." With that said on the 02 September I sent Netstar notice to cancel email then got a case number (CAS-***-S6H6)

Fast forward to 30 September 2021 I phoned in to confirm that indeed the cancellation was processed as per email and spoke to agent Koketso Mogooane who firstly took me from pillar to post telling me my email notice not valid what not what not then eventually told me the contract will be cancelled and no deduction will be done on the 01 November 2021 because I submitted notice and asked me to foward the notice emails to her which I did. A case number CAS ***-S5G3 was generated. Yesterday evening I got a emailer from Netstar so surprised because I am no longer their customer today I phoned the contact centre (CAS ***-D4C1) and to my surprise the agent **** to me, nothing was processed she didn't do her job annoyed as she was. So I ask who will be held accountable because as far as I am concerned my written notice was served and I removed the debit order from my bank with the confirmation from a trained agent that my services with Netstar is done! And now I am being told that I will be debited R225!! HOWCOME?? What in the Law of contract lies is this terms and conditions is this?