Netstar

Netstar fitted a tracking unit on my vehicle in 2017, they had all the incorrect details. my ID number was not even on the system and they had another customers vehicle details on my name. I emailed and called in 2017 to get them correct to no avail. My insurers paid Netstar for over four years for a device to track my vehicle in event of theft or hijack and Netstar would have been unable to track vehicle or person in event of hijack. Netstar does not respond or comment to this complaint. no one responds!!!! No explanation from Netstar. My sisters has simi**** issue, she has been paying for two unit yet she has only one unit installed??