Maybe you could apply to be a stage hand or something. I know it isn't nearly as fun, but if you just want to be a part of the theatre, that's a great way to do it. I auditioned for every play in high school, the first time they just dismissed me, second time I got to work backstage working curtains and cues, third time I was put on backstage, but got to play a background character for a scene, and senior year I got a named role. Keep trying, perseverance is often rewarded.