They're just having fun.
I think you should voice all of your complaints to crusty old dean Tanners. He's been wanting to shutdown that frat house ever since he stepped foot on campus. If you tip him off to when the big keg party is, with the obligatory willing babes, he can sabotage it by blocking up the kegs' C02 lines making everyone leave the party. But Ace, Hammer, Moose and the boys will get their revenge by breaking into the deans car and filling it with peanut butter. Oh the hilarity. As for you the heat of the battle will get to you, and you'll end up weakening your resolve and falling for Charlie Boy, the brace-wearing official nerd of the frat, who only got admitted because he can hotwire free satellite thus ensuring the constant broadcast of nude large breasted women throughout the house.