What?!

Today we did a rehearsal again but some of players changed their original lines, including me. I was shocked when I heard about that. There was no way to reject it because some players were absent and we must substitute them. I wonder how some people can just stay away from this performance. Should we think about some methods to punish them? I aways think it's not fair to us. Why they can do nothig and nobody scolds them. You, I don't think you're smarter than I. If any of you violates the rules, I suggest teachers should take actions against this situation as soon as possible. I don't wanna swear something or kick your axx...Let's wait and see!!!