Crazy neighbors are awful

WHY must I have a total nutbag living in the apt above me? I've been here almost five years and have had to deal with this woman for the past year. It's making my once happy abode not so happy. She yells at me, screams, keys my car, tells me to move, has her loser abusive boyfriend tell me to move and my landlord says it's a 'personal' issue. It's a personal issue since she won't leave me alone. URGHHHH