Man with a soft voice (had trouble understanding him) phoned on behalf of his boss, Carl, for our CEO.  He didn't know what the inquiry was in reference to but said that Carl would advise the President once he was on the line.  I explained that we don't put calls through, especially to executives, unless we know their purpose.   He stated that Carl would phone back, because he was the person best suited to clarify the situation.  My experience with this kind of call has been that he won't return.

Tiffany called from this number and left a message about a package to be delivered.
Try calling back and they left me on hold for 5 minutes.
Another person called 3 times later from same number and hang up. At last attempt a man claimed he was trying to reach Ames community college

Same as above about a package.  Did not call back but clearly some sort of scam

Have gotten messages from Carl saying things like " I really thought you would have returned my call by now" and sounding irritated but not stating his business.  Just got a message from 'Lynn" at the same message saying they think they received my package by accident.  Not geographically anywhere near me.  Have not ever returned call.

Received a message from a Carl Andrade saying something like "I left you a message last week, and I really thought someone would have returned my call by now" and sounding irritated but not stating his business.  Did not state why he called, where he was calling for, etc.