Who called from 3027633325

I received a text message from this number, I did not respond to it because I didn't recognize the number.  What the heck?? Now they are going to start leaving text messages like they personally know you.  The message just said Hi :)), seemed a little odd to me.

Received a text at 3:18  1st said hi with a smiley; when I asked who are you?  said :)A.dd me on y.a.h.o.o.msngr..sn is tris.....

Received a text 2day saying 'hi :)'

Received a text message that said "Heyy !!"

Recived text msg saying : hi :p
told me to add them on y.a.h.o.o.msger mikaylasmiley4
then then i asked who it was and they replied "oh  no i have no singal."