Who called from 3153704227

I got a text from this number. They addressed me by my first name.  They won't answer me as to who they are.

I also got several txt messages from this person today, asking me to add them on Yahoo Messenger under the name of "txtiechick6"...They addressed me by the name I go by on my fb account and would not identify themselves.

I got a text from this number addressing me by my first name. When i asked who they were, they never responded.

I got a text with my name stating "Hi Jeffrey..." I texted back and nothing.

I just received a text saying Hi Crystal. I called the number & a greeing came on saying that you have reached someone's text plus texting number. I did a little more research on this & it appears that Text Plus is an adroid app. I also sent a text back but not reply.