Poor service and charged for services not being used

I called Netstar in March 2024 to cancel my subscription and was advised that there is a cancellation fee and the subscription ends in October 2024. I don't have the vehicle and till date am still awaiting the initial recording from Netstar for when I got the tracking device. Today I receive an email advising me that the subscription is increasing, I called again to cancel the subscription, only to be asked a ton of questions about my previous vehicle which I don't own. When I said to the agent, I am not interested in answering questions about the vehicle as I don't own it and am not concerned with what the current owner is doing with it, he got quite arrogant and started shouting. Glad I don't use your service any longer.