My iPod gen 5 was alternate with someone. But I don't know who is she/he. So I want to use iPod because my cell phone work doesn't well. But it stuck in "Activate iPod" page. I called to Singapore Apple Store yesterday. They told me, This is iPod was bought from some shop in Japan. I need to find the old iPod owner and ask for unlock the iPod or ask for a receipt of iPod from the shop in Japan. But I don't know the old iPod owner. What should I do