Who called from 9703991383

Just called, but did not leave a message.

Only answered because it said "Delta" and I have a pending flight on Delta Airlines coming up.  Nick is right - anti-abortion group.

Called our unlisted number and didn't leave a message

Caller ID "Delta CO" ... Mar 26 at 2:57pm Eastern time. This call ended after one ring. It may have been blocked by a free service I subscribe to which is available to most Internet-based VoIP phone service users(I have Time Warner). Google "No more robocalls" to get more information.

Received call again.  Didn't answer.  They didn't leave a message.