Tu t'appelles comment?[:
What is your name?
or
What do you call yourself?
Thank you,[: And the correct response would be, Je m'appelle *NAME HERE*..?
Right!
Better word order for French is:
Comment t'appelles-tu?
Sra (aka Mme)
P.S. The most common way to ask a question in French when using an Interrogative (Qui, Comment, Combien, etc.) is:
(Example above) Interrogative word first and then inversion