So if you have nearly been slapped do you still do it?

There is this one lad at my new school who is proper stalking me atm and I really don't like it. I've told him and he continues so I've told me mum now; but everyday when I walk home, as I don't live far from school but have to walk down a main road, this lad wolf whistles at me. It so annoys me, more than normal wolf whistling which generally just makes me uncomfortable and lowers my opinion of the boy/man in question.