DO NOT ENTER INTO A CONTRACT WITH MIX TELEMATRIX PLEASE

I wrote a review last year about canceling my contract in Novemeber, I see many people have the same issue as well. They are still billing me this year for a vehicle I don't have and have requested that I end the contract and they have not. They are saying I have to pay the full term of the contract, which is 36months, because I had 2contracts one that ended in 2024, and I started another the same year. My arguement is that I sold the vehicle, they are no longer providing any services for me, I was never informed that I'd have to pay a full 3 yrs for the contract for a service im no longer using, and guess what I'm still being billed for the amount of the first contract which I cancelled