Who called from 3133357276

Got a txt: "Haha Greg"

Got a text with a link and my first name at 4:53 AM.

just got a text at 7 35 am.  Same as above, my name and a link.  Fishy stuff

Received a text at 7:24 AM with my name, then HaHa and a link.

Received a text from this number a month ago with horrible grammar saying that they liked my Facebook profile.

Received a text this morning at 6:00 AM CST "Alex... omg" with a sketchy link that I didn't click.

What's weird is that this person has called me "Alex" in both texts. My real name is Alexandra but I go by Allie. I wonder how this person/spammer got my number...