Who called from 3143123782

Who is using this number?

Don't know anyone in St. Louis.  And they hung up on answering machine.  Don't know what exact scam this is, but I'm sure it's one of them.  Real companies leave messages.

Maybe some kind of survey?  Message left on answering machine.said something like "press 1 if you are under 25, press 2 if you are 25 to 34, ..." etc.

Received a call from this number. Caller ID: Unavailable. We are in the 314 area code. Didn't recognize the number. Didn't answer the call. No message left. As Lexi, above, stated "Read companies leave messages."

Received call from 314-312-3782. I'm in 314 area code so I answered even though  ID was "out of area".  Robot stated it was a survey but did not say what for. I hung up.