Contracted ended but still billing me

After selling the card i was driving, tracker provided settlement amout of R800 +- which i was prepared to pay to cancell the contract. This settlement was provided twice. when i called the call centre to get the payment details, they advised me to pay a significantly larger amount which I disputed. I advised the consultant that i was given a differnt amount to settle, after which he advised that the calls are recorded and he will requested the recording and have a manager call me back. i am still waiting for the feedback, after which i was debited again for a service i dont recieve. i instructed my bank to reverse the debit order, now i am in arrears on my account. can someone please take ownership and cancell my contract, i am willing to pay the settlement which was quoted to me.