[jaunvie]

I'm afraid that if you really feel that all of the mentors are "corupt", I'm not sure you're going to find the advice you're looking for here. If you feel that the only reason they are not giving you what you want is because you're not one of the "in" kids, I'm sorry. Since I don't know for sure if it's true or just your point of view, I will try to go over both.
If it's true, that sucks and it shouldn't happen. .......but it does. I hate to say it, but that's life. You will find that it happens in "the real world" too. It's a hard life lesson to learn. You can try to go to someone with athority over the team. A principal, superintendent, or First maybe. It's a tough road, but if that's what's happening, you need to stand up for yourself and others the situation might be affecting.
If it's just how it "feels", talking to a mentor, parent, or coach can help alot more than you might think. You might be assuming things that are just not what you think. The advice already given is very good.
If you feel you've done both of these things and still nothing is happening. Keep trying. It can take along time to affect change, and it won't happen unless you keep trying.

On the bullying note, please see an athority figure. There is no excuse for people to treat each other without simple human respect. I hope you understand that you are useful and important to this world and no one can take that away from you unless you let them, but don't let a few creeps get away with being jerks. If they're bullying you, it stands to reason they're doing it to someone else too. Be a hero and tell someone, please.

I hope things get better for you and remember the skills you learn trying to deal worth something like this will be useful all your life.