ADT - Endangering their clients lives

My alarm has been activating with no signal going thorough to ADT and alerting them. Sometimes it works and sometimes it does not. As it worked when i was on a call with them, they say they cannot send a technician out, as i will be billed.

PATHETIC! If the alarm works 50% of the time, how is that their attitude?

They tell me that they will bill me for the call out... does that mean if the alarm doesnt go off and something happens I can bill them for the cost of the ****** goods?

I need feedback!