What to do if a person see ghost or disturbed by spirits.

We are afraid of ghosts, we are afraid of the unknown. So how to get rid of the ghost infront of a person. Chanting, a person told me, he chants all the prayer a lady kui yee ( the lady in black clothing chanting during Buddhist prayer) taught him and he still felt that someone continued to touch him. I told him to communicate to the spirit tell the spirit to allow him to make a living in the place. Trying to get rid of the spirit will upset the spirit and create problems for oneself.