Tracker debit account after cancelation of contract

I carried over tracker device from previous over in 2016. I was happy to renew the contract in 2018. I received a call from call from tracker in March 2018 for the renewal and made an appointment for July. They couldn't wait as per the appointment and sent someone in March instead of July. The technician called me informing that he has arrived to install a new advinced device. My mistake was to agree to the installation. I was on site busy as the lady worked on the car, with less experience she broke the steering lock and claimed it was broken before she touched the car. The issue isn't resolved to this day because of the conditions that came with the fixing of the steering lock. I then decided to sell the car and notified tracker to cancel the contract. This wasn't accepted by tracker and they kept on debiting my account unit I blocked them. I was then handed over to lawyers who claimed to close the account after the payment. After paying the requested x amount tracker continued debiting my account, I forgot for the second time and i was handed over again, this time i was given a cancelation letter by email in year 2021. It was a few months and tracker started all over again, lawyers threatening to blacklist me in 2024 June i agreed to pay the needed amount and begged them to cancel the contract. The last payment went of in July. A week later I received a email from tracker with an invoice. I tried contacting the ****mer tracker with no luck. The tried to debit my account end of August but did not get funds. I sent several emails complaining about this but no response. I get sms saying they tried calling me but no missed calls. I wouldn't recommend anyone to tracker. I am a angry X tracker client