Didn't leave a message. I looked it up online and found nothing,
[Been getting a lot of those recently...]
so on the off chance it might actually be a real person,
I called it back.
Robot said "All of our representatives are busy right now,
if you feel you received this call in error, press 5 to be
added to our do not call list."
No indications as to who they are or why they called...
but at least the number went somewhere...