I need help with personal injury

I was sitting at a table at a restaurant and 4 women approached the bar area near my table, one of the women hit me as hard as she could with a pair of sunglasses in the head very close to my eye. At first I was unaware of what I was being hit by so I was scared to death. When I saw the sunglasses I knew that's what hit me. This woman as well as the others were intoxicated and were ordering more drinks when this happened. Instead of stopping the further consumption of alcohol they were passing more drinks to them as they laughed about hitting me. The general manager came once the hostess went to get him I was taken into a very small backroom and he was very aggressive towards me. The general manager then asked what happened I told him what happened and he acted as if it were no big deal. The general manager then asked if we were going back to the restaurant and because I was just assaulted I said no he then told me to leave the property right away, confused by his aggression I asked fo