This has got to be some sort of scam. This phone number called at 12:30 a.m.!!
When you call the number back: there is no ringing.
A robotic female voice simply says, "All circuits are busy. Please try your call again later. Announcement8Switch 41-3."
The call is then disconnected.
This is very strange.
I am proclaiming it a scam simply because of the late hour these calls have come in.