SMS message just said "Hola Timothy!" no replies to my reply messages

a text saying "hola Vanessa" and i replied asking who it was, and it replied immediately saying "lol if you want to know who this is you got to add me on Y! msger. my name is txtchick69" thats word for word. and i said i dont add people i dont know and asked how they got my number but no reply.

Got that message and on the reply, they asked whether I used Yahoo messenger and that they go by the name of textiechick22....