Abusive security staff

I went to "Bro's", previously known as "Sports Bar" in Carnival City with a few of my girlfriends on Friday. I got lost looking for the loo, and accidently stumbled into a Comedy show. I was approached by a big Nigerian bouncer, though I made it clear that I was lost and asked him for directions to the restrooms, he grabbed my arm aggressively and attempted to push me out I managed to turn around and grab him by his tie and ordered him not to man handle me. I am a 26 year old, 58kg, African female. He carried on pushing and pulling me, but when he realized he was causing a scene and disrupting the show, he called his fellow colleagues who did not give me a chance to explain what happened. They just grabbed me and threw me out of the building, laughing amongst eachother. I got home with bruises and scratches on my hands and arms. Very disgusting treatment and will not let this go.