Cancellation of a tracker that was installed with deceiving information / incorrect financial implication

I was called in January 2022 by a consultant by the name of Ndu ,contact number used was ***, He asked me to say they need to do an upgrade on the tracker, I asked if there are extra costs and the premium has not changed, and he said no.In my mind i thought an upgrade is on something you had.

On the 13th of January 2022 a consultant was sent to install trackers in my 2 cars.only realised when he is done that it is not the tracker that i have been using.

I started calling the call centre and explain the misunderstanding for them to cancell as i already have a tracker that i am currently with.Every time i call they do not give me a solution.They debited my account in January 2022 and i could not reverse it ,from february i decided to reverse whenever they debit my account.

I tried calling their call centre to no avail.

In August they handed me to the debt collectors and i paid R2 310.00 and i wrote a letter for them to stop or cancell their contract with immediate effect.

I have been receiving the text from Matrix this week telling me to pay R1 848 by the 25th of November 2022 to avoid handing over to the lawyers.

I need help because the number they put on the SMS nobody respond ***.i need my money back as this contract was not done in a right way.