...don't call Microsoft support without your receipt.
Unless you still have your receipt, you'll either have to settle for getting a much inferior mouse replacement (Sidewinder X3) or nothing at all.
Despite whatever the warranty and refund departments tell you (and you will have to call both), it will eventually loop back to the warranty department, which will tell you, despite earlier assurances that you'll be able to get a market-value refund without a receipt, that you'll need provide your receipt to get any kind of refund.
Otherwise, enjoy your brick of a mouse and Sidewinder X3 replacement.