Calls the cell phone and then hangs up.  When calling it back, recording is "Your call is very important to us - please stay on the line and you'll be transferred to the next available agent" while playing bad piano music.  Could barely understand the individual, but it turns out it's some security company trying to sell home security services.

it was a company called Home Protection. Just hang up...

Automated call from 'Home Protection'

I'm impressed with this robocaller.   The voice was very fluent, natural and interactive.  It was so smooth that something just didn't seem right.  The call was for them to install a wireless home security system in my home and the only thing I would need to do was to install a sign in my yard.  (Yeah right).  

I asked...are you real? and he responded "of course, yes I am", then went back to the script. I then asked what time is it on the east coast if you're from New York?",  I guess they didn't program that response and the system hung up and said "Sorry about that, good bye".

WOW! I must be popular! 2 unwanted phones in 2 days! LEAVE ME ALONE! My number is UNLISTED and UNPUBLISHED.