Disappointed client

I installed a cartrack tracking unit in all three of vehicles two for business purposes and private vehicle. I've had to get technicians out 5 times on one of my business vehicles still not working. I tested the other two and disconnected the battery which I found out by sock also not working when I press the panic button nothing at all.. I reported this to them via email with only a automated feedback message replying that they will respond, no response whatsoever.. I even asked on their website for a call back but not response also. I even contacted one of the managers an no one pick up the phone.. Really disappointed to be a client of Cartrack. I would not recommend Cartrack to anyone the worst i have experienced with tracking companies.