Pathetic NETSTAR!

Currently have the most horrid experience with NETSTAR my tracking device had to be replaced twice in the past 2 years because it was faulty.. which I had picked up when calling in to test it.. They unit was replaced 2weeks ago and still the vehicle cannot be located.. I cannot wait to cancel my contract as I have absolutely no faith in them if something had to happen. Ps. When trying to cancel they make you hold then drop the line.