They called yesterday, I didn't answer it.  I am ALSO in Oklahoma...we just had 4 women murdered in their home in Tulsa last week.It is unsolved.  Could these "home security" people be targeting areas that have just suffered home invasion crimes because they know people in the area could be afraid??  
That is DISGUSTING!  To not only harass people with annoying calls is bad enough, but to target areas where people are afraid for their safety is deplorable!

same here in Ok--I called it back and it was a marketing company and asked for the number that we want put on the do not call list.  No way would I enter my #-----it's a way for them to SELL our private numbers!

Just got the same call here in Washington state.

Same here. We're in Iowa. We let the machine record message. Really: "free" home security system just for putting a sign in the yard?  They want something and are willing to lie upfront to get it. Also, they ignore the do not call list which makes them twice as revolting.

A caller ID message "Appointment" was a company selling home security systems. We asked they remove us from their listing.