Cartrack not reliable

I had a tracking unit in my car but sold the car. I called cartrack to change details to the new owner and opened a new contract for my new car about three weeks ago. They sent me an sms with a link to confirm fitment location but ever since then they haven't contacted me to install, yet I know they will debit me next week when I get paid. Everytime I contact them they transfer me to the scheduling department which never picks up and I end up getting cut off the line. This has made me feel anxious as my car is not safe without a tracking unit, and my insurance premiums are high due to the lack of tracking.