Worst Service EVER

I took out car insurance with Auto n General it had an option for tracker by Netstar in May 2020. Unfortunately i could no longer keep the vehicle to to financial constraints. I cancelled the insurance in may 2021 with Auto n General all customer care was amazing. My big problem is Netstar, the premium has not been cancelled since today. following the calls i was getting my first formal email to Netstar was on the 13 September 2021 to cancel the cover - they said i had to cancel with them as well even though i took out the cover at Auto n General. i received a call back around October 21 that i have to pay R815 as it was a contract. I arranged for the payment in 3 months. my 1st payment was 27/11/2021 and the last was 25/01/2022. i realised the cover was not cancelled, i sent a follow up email on the 05 February 2022, i got a response from a lady named Lucia who seemed nice and asked i send proof of payment. i did sent the proof on the 15 February 2022 and she promised to get back to me. i received an email few days later that i must pay another R800 for cover to be cancelled. I sent another email asking for clarity as my 1st formal cancellation was September 2021 and its February 2022 still no one is willing to cancel the over, and i no longer have the vehicle. No response till to day. Now even worse they have debited my account without my concern on the 15 MARCH 2022. All the payments i made were never debit, Netstar has no time to cancel the premium/ or call me to clarify and apologize but they can debit my account without my concern. some1 please help me put a stop to this, how long can i fight to get a cover cancelled, what am i paying for if am not using the service. i am extremely disappointed in the customer care.