Who called from 9049006440

This number has been calling my business number all day.  Hangs up after I answer.  No one says anything.  I have better things to do than waste my time answering calls where no one speaks.

Called here looking for an old employee. Pressed 4 for wrong number.  I'm guessing it is for the education loan he owed.

I am having the same problem... Who is this?

Has called many times and never leaves a message.  I finally answered and the person didn't say anything and then hung up.  It can't be a debt collector - at least not in my case.

Debt collector