Who called from 3124284758

Unknown name.  Wouldn't not tell me business name.  Our of Chicago IL

calls and then when the answering machine answers, doesn't leave a message and hangs up.

won't leave msg on answering machine

Called, I answer and said hello twice with no response, listened for background sounds, nothing. I think it was automated.  Info also located at
http://www.callercomplaints.com/SearchResult.aspx?Phone=3124286041

I got a call from this number.  When I answered, there was a pause and then the connection was ended.