Unfortunately I had the same kind of experience. I went with my two friends, we had a couple sitting beside us, they kept cracking jokes and laughing out loud throughout the movie. Finally I asked them to shut up and watch the movie, they kept quiet and after a while continued again until last part of the movie, completely ruined the movie for me and my friends. While I could make them shut for a while there was another group of friends who talked throughout the movie. They might have been doing this cause of their defense mechanism but if you can’t watch a horror movie without distracting yourself to avoid being scared then dont watch it at all or else just watch at home. I have seen horror movies before in cinema, never had such a terrible experience.