Who called from 6143491390

I think it might be a scam..the one where you're suppose to answer with a yes. I answered with a uh-hu then was told that i won something

Kept asking if I could hear them

Call, never say anything.

Never left message. Called back and it's an automated message wanting me to do a research study. Says to go to researchstudy.net for more details. Guessing it's a bunch of spam.