Can I sue a cemetery for lack of perpetual care?

Seems every time I go, I have to trim the grass that is growing across the tablets of my daughter and husband. Tried to speak with a manager at Forest Lawn for two hours. I was passed off six times. I went back into the lobby to seek help and an employee who earlier claimed to be a manager, but would not provide as business card, was asking those behind me if they had been helped. I turned to her and politely said I been here two hours, she put her hand up in the direction of my face and said, I don't want to hear it. I walked after two hours.