fake birthday present

I received an itunes card for $50 in the mail. Needless to say I was pumped. No info attached at all, it looked like it was a present ordered from the website. I went to use it today, so jazzed at the pretty tunes I would be hearing in my ipod, when I plugged in the number it said it wasn’t activated. I had to return to the retailer and get it charged up. Is anyone out there in blogland the mystery giver? If so email me please. Or am I the sucker in a marketing scam. There was absolutely no paperwork with it, what a mystery!