Door to door men are knocking and informing residents their system was wrongly installed and was missing audio/microphone monitoring functions. This is easy info for salesmen to gather from public record permit searches.
Beware of anyone trying to sell you something that you already have or have had installed with a permit. They'll look up your address in the public record database and come knocking.
As for validity of GE & monitronics??? I'll ask the monitoring company, Monitronics. and I'll ask GE, the company who sold the system and installed it.
I have neighbors, too, that have been solicited. Comparing stories we've heard from salesmen leads me to believe our database info is being mined for solicitors to gather neighborhood routes to come knocking.