Called ID shows "Tennessee Security". Left no message... called number back and gave an option to press 9 to have your number added to the do not call list...
They called, no message left, I would never call these type of people back and never press a number they tell you, to be removed from their list or not, this could re-direct you to a long distance number you'll probably have to pay for. That's how these scammers make money. If the call is someone you know or you called and know they number, pressing a number on your key pad would probably be ok.