Apparently GameStop, which controls most of the US's used-games market, is squirreling away as many of those one million Zelda copies in circulation as it can, just in time for ... spring? GameStop's spam-calls might indicate that the retailer is not reaching its double-sale quota. GameStop is probably having trouble buying back copies of Twilight Princess (so it can sell them again for a solid profit); likely because consumers are holding on to the game. And so the calls go out.
Inside the store is one thing -- but pestering your loyal customers on their phones? That's just squirrelly business practice.