Who called from 8314318163

Received text saying"hey" and my first name. I don't not know anyone from the area that the 831 area code covers.

I had the same thing happen too me, text message and they said "hey" and then my name, I assured them I don't know who you are and then texted me back saying I have know battery life left, sort of troubling if you ask me, wouldn't be all that hard to find out who they are!