Unable to use car since Thursday!

I installed a new car battery in January and a Netstar unit in March. Shortly after I installed the unit, I started experiencing multiple car battery failures. After getting taking my car to the dealership, they alleged that the tracking device is draining my battery. A 2nd tracking unit was installed recently and 2 days later I started experiencing battery failure again. I took my car to the dealership on Thursday and booked an appointment with Netstar to be there on Friday morning - the Netstar technician never arrived and yesterday when I phoned the call centre and spoke to a supervisor / manager called Reeda, he told me someone would phone me back to assist - I have not been called and have not had a vehicle since Thursday.