Replying to Huge Problem

Im 14, and live 2 hours away from manchvegas NH (manchester new hampshire). Anyway gamestop has my xbox 380, and is holding it for 48 hours. My cousin cant pick it up cause he doesnt have the receipt, im the only one who can pick it up without the receipt. The receipt is in florida with my grandmother, who bought the 360 for me. No one can give me a ride to manchvegas in the next 2 days. i have been waiting for this thing since i pre ordered it in fucking october. now i cant get it. what the hell can i doooo