I work in retail on a part time basis. Occasionally I am assigned to the office for some admin duties along with the man who works there on a full time basis. He is well liked amongst all staff and is generally a good work mate, however he does not call me by my name and it is really bothering me. He calls all other staff by their names but not me. I have asked him not to call me the name he calls me by but he doesn't even try. It probably will damage our working relationship though if I do complain.