Who called from 3193720240

Just called me. No message.

Didn't recognize so I didn't answer.  Did not leave any message.

From: Ft. Madison, Iowa.  Called while I was busy, looked fishy so I tapped on "Reject".
Left an empty voice mail (probably hung up before vmail engaged).

Same with me a 5:31 am this morning.  Didn't answer and no message left.

I answered, and there was a robotic message, saying it was from "Credit" something - it woke me up, so I don't remember details - something vague about one of my credit cards. I tried to call the number back, and get a message that it's non-functional.  Fishy.