"Pat" calling
me: Pat Who?
"Pat": We can upgrade your security system land line to all wireless...
me: [hang up]

TTT
I've had multiple attempts from these crankerz.

Didn't answer this call. No voicemail. Must be yet another scam that I'm going to miss out on.

I answered thinking it was regarding an appointment. WRONG! After answering I heard a click and then speech about a body alert system.  I abruptly said " I have one" Next was asked if I had more then 3 yrs and I hung up. Guess he had not heard about a DNC list.

Scammer calling.