I am beyond gatvol with Netstar

I have had the worst experience with this tracking company. They installed the device on my vehicle. After installation. The steering light came on and the power steering stopped working. I called the technician to come and look at the problem the next day. On the next day he came and checked and said he does not see anything wrong. He advised that I must top up the power steering fluid and perform a reset. I did that while he was still there and still the problem did not go away. I told the technician that I will have to take my vehicle to my mechanic for repairs. My mechanic told me that the problem was caused by the installation of the device as some wires were not connected and hanging. He repaired the problem and it started working. I asked my mechanic for a report and invoice which he provided. I sent the invoice to Netstar and they have refused to reimburse me for a problem that was never there and was created by poor performance of their technician. I am so disappointed I want my insurance company to remove the device and get another company