I WILL NEVER USE NETSTAR EVER AGAIN!!!!

I was a Netstar client since 2017. In July, I called Netstar to alert them of my tracking device not working and they convinced me that I needed to get a new device as the one in my car was outdated. I was involved in a car accident and the car was written off, and now I can't get cancel my contract with them even though i don't have a car anymore. WILD!