Who called from 3129716362

First calling from this phone number, ID listed them simply as "UNKNOWN  NAME."  They would not speak to my machine so I would not pick up.  Listed them with DNC.

Did search for this one.........Phone number: 312-971-6362 is located in Chicago, Illinois.
Its exchange 971 is managed by GEOTEK COMMUNICATIONS.
The number is currently on switch number CHCGILIDDS0.

don't know the number and they won't leave a message

When phone rang I did not recognize the number. I disconnected the line and that was the end.

no message left