My supervisor degrades and yells at me and threatens to fire me.

I work for a large resort company in Naples seasonally and my direct supervisor or multiple occasions has left me under staffed, yelled at me , insluted me, placed wrongful blame on me and has threatened to fire me. My father was recently murdered and I asked for two days off to go to the funeral and was given those days. I was unable to afford the trip and instead used the days to morn. When I returned to work and told them that I did not use the days to leave I was wrote up for not letting them know I didn't go. I live in employee housing so this has put an insane amount of worry and stress upon me. I am worried that since this person has been with this company so long that I would be a victim of retaliation if I report it. What can I legally do to stop this harassment?