prob because this is 10 yrs old, but his only solution to alarm systems is cutting the phone line. most alarms now offer a cellular option so if your phone line gets cut, the system will go on back up with a built in cellular module hidden by the alarm's brain. also if they cut your phone line, there are systems that will run off your cable broadband connection (like network security cameras that send alerts/updates to your smartphone via the web), but if they cut your broadband cable then that's that. Best back up would be the cellular module I guess. Sounds like having a front metal screen door, and applying a deadbolt to that and the front door might be enough to have them move on to the next house.