what am I paying for

I have subscribed with chase tracking around<br> August 2014. Ever since then I have never received and communication from them, no notification or any alerts, when I test the devices on line I don't get any SMS back as to weather the device works. In may I called them requesting a statement till today, I called them again request a statement in July I am still waiting for that email. On the 25/09/15 when I need a road assistant since I had subscribed for that included on the tracker no one could find my policy using my id or car registration. The service is really pathetic and seeing all the complains on the I really wanna cancel this contract they really not worth my hard earned cash. <br> I need info on how to go about with cancelling