Do you have a Microsoft store nearby? If so, I'd take it and your receipt in. There's a lot to be said for an in-person appearance in my experience. Retail stores are setup to (and depend upon) good customer service, unlike call centers, which are just setup to take the volume of complaints and churn out canned answers, even if those answers seem to just piss people off. At least nobody is around to see your miserable experience and be put off by it. They also aren't in the business of selling product, so there's no incentive to kiss your ass and make you happy. They aren't income generators.