Who called from 3234983665

Rang once and hung up

Called twice didn't leave voicemail. Don't know anyone from this number

I don't know anyone at this number.

Rang once, hung up--I'm assuming it's some sort of scam where they want you to call the number back.  People can charge you for the phone call IF you call them.  I wouldn't risk calling the number back if you feel so inclined.

Rang 2x then hung up