I hurt my hand at the casino my phone fell into an open drain so i got it out the steal top fell on my hand?

i was on my way onto the casino wen my cell phone slipped an fell ut of my hand into an open sewage drain so i reached in an got it out and as i tried to be helpful an slide it back the stel top that suppose to cover the drain crushed my right hand. l made a report after i was leaving because the pain was so unbareiable so my cousin then there after drove me to he ER and they prescribed me to some pain med.and they referred me to anoher doctor