Zips Car Wash

I was running a little late to drop my kid off and get to work but went through the car wash really quick. Well when the blue brush thing was going I heard something break and was looking around and saw my mirror dangling. I grabbed my phone real fast and took a picture while it was still washing. I took another picture at the exit and you can tell it's been there entrance in the background. I thought about saying something right then but was late and thought I could easily fix it. Wrong and I never empathized had it happen. After talking to people they said I should file a complaint and I'm not really sure where to start.