NorthStar Alarm Services, LLC. review: Alarm

NorthStar's system has not worked for over a year. I have called many times. I have the following issues:
• The alarm goes off randomly when we are not home. NorthStar said that it is because of mirrors in the house and asked us to put a sheet over the mirror.
• The alarm voice gets activated and talks when I am in the house on the phone talking.
• The cover says it is tampered.
• The alarm battery shows that it is drained.
• Smoke alarm goes off
• Recently I called several times and waited on line for long time and got transferred and hang up and no call back