Pathetic service from Netstar

Pathetic service. They were to have installed a tracking unit on a new vehicle I purchased on 1 May 2023. That was not done. i had to call them on several occasions and sent an email. Eventually the dealer told me that installation was arranged for 5 May. On that day the technician was in a hurry and could not install. He promised to call me back in 2 minutes about installation for the next day. Did not happen. On the next day I tried calling him several times but he did not answer or return the calls. I have 4 other vehicles with Netstar and I am looking at moving all the contracts. To date no-one has called me from Netstar. This is one of the worst service delivery issues I have ever had.