I don't mind phone calls but...

common sense is greatly appreciated. Have one student in my Thursday night class who regularly calls a couple hours before class to ask questions about class assignments, grades, etc. Since I don't have office hours before this class, I can't answer those questions until after class anyway and end up talking to this student in class. So what's the big deal? We are more than halfway through the course and s/he is still doing that, even though I asked this person to wait. I guess s/he just likes leaving messages? Or annoying me?