Is the dance hall responsibe to call police for an injured patron

I was assaulted in a dance hall by a patron and the management stopped the guy when he was leaving told me to stay away and go back inside, when the manager came back inside he told me the guy admitted he pushed me so they told him to leave the property without so much as getting his name etc. I told them before they went outside that I wanted to press charges. So I asked them, now how can I press charges he is gone, they said if you want to call the police I may do so on my own.They never asked me what actually happened or was I hurt. So there I stood with what looks like a dislocated shoulder and a broken wrist from the fall.Do I have any recourse against the dance hall. the other guy was drinking but we will never know how much since they let him go, I don't drink.