I got the same type of message on Oct 18th. They know my name, saying they haven't heard from me in a while. I texted them back and got a response today (Oct 29th). Then they asked me to add them on yahoo messenger, user id textgirlie38 to find out who it is. I don't know who this person is and their number is a "textplus" phone number, so you can't call them, only text.
Got txt that said my name and to add her/him on messenger??
Here it is:
lol if u wanna know who this is u got to addd me on Y! messenger, my name is txtiechikie57