Alarm system fitted/never worked properly

We have had a a new alarm system fitted by chubb in our business Boardzone Kitchens in Brits at the end of May. Because it was a new business and has no track record they would not fit it unless we paid a years fees upfront which we did. The system has never worked properly, every time the alarm is activated when the shop is unoccupied at night and weekends we are inundated with calls from the control room that the alarm has gone off. Every time they have to send out a vehicle to check and we have at time been out ourselves and we cannot see any reason why the alarm has gone off at the control room as the alarm is got going off in the shop. We have had technicians out to look at the system and we have contacted whom ever we could get hold of to no avail. Chubb is blaming the installers (which they appointed) and the installers are blaming chubb and nobody is getting the system running correctly and meanwhile we are being woken up up to 10 times every night with calls from chubb. My husband has spoken to Mr Andre Bekker, Mark Win Adams, and Desmond and somebody who said he was Mr Bekker's boss who claimed to be a \Director". I have put a complaint on their website to no avail"""