Alternative to "Tracker"

Can anyone suggest an alternative to "Tracker" ? They are so useless and incompetent that I want to cancel my contract with them and find an alternative. Having just renewed the three year subscription for £350, they wrote to me weeks later advising that they had cancelled my subscription instead. This means that for many weeks my car had no insurance cover against theft, since a Tracker sub, is necessary for cover. Not only that, but Tracker then never returned ny calls or responded to my faxes.

Nutrigrain bars are by far more tasty than Trackers.

Thanks for the head's up, I've considered getting a Tracker in the past.

I seem to recall a similar system called Trackstar, but I've got a feeling it might have been taken over by tracker