We haven't, but I am not surprised. I often suggest if a child has never been to the movies to take a set of ear plugs just in case and all really small children should wear them.. Some movies really are too loud. .
Here in Austin, there are special screenings for children's movies that the theaters keep some of the the lights on and they turn down the sound..You have to go to the theaters website to find out the days and times..
I have also suggested parents speak with the theater manager about allowing a parent a child to go into a theater showing a movies just for a few minutes, so they can see how their child will react.
I hope you can convince your child to give it another try.. Also there are some people that a Theater is "sensory overload" for them. All of the people, the smells of the food, the darkness, the cold air conditioning and all of the lights on such a huge screen.. It is just too much for them to handle..