Mistaken Identity in a Group Interview

So I recently applied to a program and did not get accepted. I was extremely confused as I knew I had well above the average GPA and ACT scores for this program. I called and asked for feedback and they told me that I interviewed poorly. That I didn’t expand on my answers a lot. This EXTREMELY confused me because I had a well rehearsed, in depth answer to their one question of “tell me about yourself.” However the other girls in my group did not. They gave 2 sentance answers and mumbled into their laps. I think they may have gotten me confused with one of the other girls. If that’s true, can I or should I fight it? I was really excited about this program