Luanne and I rent an apartment. Grote Street isn't the nicest of areas so we have the following:
Glass-breakage sensors on all windows
Motion detectors covering each room.
Video cameras watching the doors.
Central Alarm System monitored by ADT.
I have two deadbolt locks per door in addition to a chain and the lock on the doorknob. You knock on my door I can see you with my cam from my computer.
As for ADT.... ADT contacts us whenever something trips... one of the annoyances of having motion detectors is sometimes air currents will trigger them. I have a friend who works there I will email her asking what would cause them not to call.
I'd be on the phone with customer service... escalate it to a Manager and demand an answer. I'd also imply lawyers... Implied Lawyers can solve many problems.