Tired Angry and Frustrated!

over the past three months there technical team has been out to us 10 - 12 times. We decided to upgrade our alarm. Simple enough? No ways!! It has been a series of faults and beams not working and false alarms on and off for months. What's worse is when we report a fault we wait for days and they just don't even bother to contact us or send a team out leaving us without a functioning alarm, leaving us completely vulnerable. Only when we make a big scene do they send someone out and the system works for a few days then everything goes haywire again!! im so tired of this!! I am SO OUTRAGED that ONCE againwe are sitting with an alarm that DOES NOT work!! after going away for one night and having several false alarms at all hours of the night and day, stressing weather our house is OK being told that beams have gone off as well as multiple sensors in the house and even a panic!! Besides our neighbours hating us for the noise pollution! One also cant stop the imagination from thinking the worst. I want someone to give us an explanation as to why after 3months of this continuous issues why we still do not have the peace of mind of a working an functional alarm? We want answers! SO ANGRY