Terminate my contract….

I have been trying to cancel my membership with these people. I was told to pay an amount of R140” and something and was offered a discount. I paid that discounted amount and pleaded with them to cancel my contract. Till this day they have not done that, they always debit my account. They coming back again to say I need to pay another huge amount offering me two payment options. I just want to say that I am not going to make any further payments to you guys, come remove your device otherwise I will get someone to remove it so that I can mo d to another company. I’m not even sure that they installed this because I can’t even access their App, I emailed for assistance and no one is assisting. You are the worst tracking company I’ve ever went for and regret opting for you guys.