Who called from 3133223000

Not sure who this is but they keep calling and not leaving a message

just found out this # is form ford dearborn truck, so if any one you know works there and they try calling from a phone in the building, this # shows on the caller ID

Call at 5:20 PM on 10-20 with no message.

I live in Belgium, Europe
Today I received a call from this telephone number:
+1313-322-3000
which was clearly from the US
I did not pick up the phone, I googled and found this forum.
I also googled and came across Ford Motor Company, MI

This number is the generic number that displays whenever you receive a call from the internal telephone network of the Ford Motor Company Dearborn Truck Plant.