Bad service.

I am disappointed in the service that I have recieved from National. I pay a monthly fee and expect service but nothing ! About a month ago, when I wanted to set my alarm Before going to bed, I noticed everything was off, panic/emergency button did not work either. I immediately contacted National and informed them of my experienced issue. They then said they are sending out a technician to come an have a look, I waited that evening, no one came. The next morning I called, no answer, no response. Ever since I tried getting hold of National security. Everyday, I call , send emails, no luck, no response. It's been a month, without service, but my monthly was debit. Today, I tried calling, and eventually there was answer, just when I mentioned cancelling my contract, someone called me. I am highly disappointed by the service that I received from National.