Learn how to get a refund when you cancel your Microsoft subscription.

Through this process, you’ll find out if your Surface is in or out of warranty and how much it’ll cost, if applicable. Depending on the product, the service offered may be a repair or a refurbished …

They want that information so they can actually charge your credit card, steal money from your bank account, or use your identity to open other accounts. Often there's another part to the scam.