I understand you're disappointed. I know if it happened to me I would be all manner of sad face over a defective product.
Unfortunatlely, it DOES happen from time to time. Compound that with the release day rush to delivery, and you're going to have cases where things weren't tested, or tested as thoroughly as they should.
At the same time, keep in mind, Apple didn't personally single you out. Happy customers are repeat customers, and though they can't always directly control quality control, I'm sure they're working with you to resolve the issue as quickly as possible.