I cancelled my contract with cartrack the beginning of 2023

I cancelled my contract with cartrack the beginning of 2023. I am still billed even after I settled them via Viljoen Attorneys. I am just announced by Cartrack, first for paying for a car that was in an accident I 2022, I explain to them, but they turned a blind eye. Why should you pay for something that is not in use, even if you cancell, worse even if you have settled them, they keep on threatening you. I won't send anyone to them