Tracker continued to take my money after cancellation

Dec 2021, I got involved in a car accident that resulted in the writing off my car. I then notified tracker in the year 2022 in February that the car had been written off. I would not be needing the services anymore.

A year later I was still being charged for the insurance of the device in my car as well as the original product I had acquired from them. I notified them and they cancelled the insurance of the product and refunded me the money they had been taking ********ly.

But they continued to charge me the initial product fee of R211 for 14 months since the cancellation. I’ve reached out multiple times, even threatening to take this current route I am taking to no prevail, and this has been going on for three months now and the last response I got was that they’re looking into to the matter.