Who called from 5747658120

I received two calls, one yesterday (09 Aug 2011) and one today. I answered yesterday's call, no response. I let today's call ring as I was working, and no response left on answering machine.

I answered and they hung  up. Now it's blocked.

i saw who call and it was 574-765-8120 and i did not answer it and no one left a message

The person at, 574-765-8120 has a history of calling people and not responding when you answer.  Caller Id says it's from, Indiana

Showed up as "Name Unavailable," no response when I answered.