Shadow Of Mordor Last Gen Sucks! >:(

So, my mom let me choose what I wanted for my birthday present, and I chose GH2 and Shadow of Mordor for Xbox 360. Turns out, SoM doesn't WORK. No scratches or anything, it just literally doesn't work. My mom paid $30 for this garbage. It doesn't read discs, cause one's install and other's game, and trust me, Xbox is fine cause it played my Minecraft disc and GH2. And I'm not the only one who has this problem, and I'm so pissed... My stepmom and stepsister love Middle-Earth, but thanks to such a great game company, I can't manage to play it cause it sucks! My bro's gonna take me back and I'm probably gonna choose a new game or something. So mad... I was so hyped of this... Oh, by the way, it advertised something so soon: The Hobbit on DVD... coming November... Well, good night I guess, fella.