These jerks have been calling 3 to 6 times a day for the past 3 days and never leave a message. I screen all calls and only pick up calls from people I know. An internet search indicates they are someone called "Locksmith 1 2 3". I finally picked up and didn't respond just to see if a live person came on the line. A live person came on the phone and I hung up. Then called back and was asked via a recorded message if I wanted a security sign in my yard. I was give a choice of accepting or being removed from their call list. Took the later, I'll see if it works.