Today I informed ADT that I found another security alarm company for services and not 5 minutes later I get a missed call from the above #. All these other post makes sense about security alarm scams.
I received calls from these people on my cell phone and home phone at the same exact time. No one answers when I say hello. I call back, and they say "to be placed on our do not call list, press one now" then the phone goes dead.