Psy...if you want to live please get ride of him, you can paint that person in a paper(if you know how does he look like) and burn that paper with his picture. you will lose the bad voices. And also if you are Christian go to a church , speak to priest.

Sorry if i sound crazy but my sister used to hear voices from a man and hi show himself to my sister telling her to kill herself because nobody loves her, she had a knife in her hand and in that moment my other sister entered the room and she stoped her. We don that burning paper with his picture and she never has seen him anymore or her voices. Know she is maried and she is in peace whith her mind.

Sorry about my english, I'm from Europe.
I wish u all the best.