Who called from 4074774138

I don't know anyone at this number, so I never pick up the phone. They never leave a message.

they answered when I called them back in a language I wasn't sure of

This evening was the first time I ever received a call from this number; I didn't answer it (it was on my cell phone).  I automatically googled it and arrived at this site here.  Does anyone know the source of the call?  Or is it just a scam looking for random victims?

I got a call from this number but let it go to voicemail. After reading these posts I decided to just block it.

bizarre.