Thank you for posting your inquiry here in Microsoft Community, S _829.
I'm sorry to hear that the extended warranty was not able to cover the device. May I confirm the issue of your Surface?
You may also review the Microsoft Complete Coverage details on this article: Warranty and Protection Plan Terms & Conditions. Select a country or region > Scroll down and look for Microsoft Complete for Devices Terms and Conditions > Download the PDF file based on the purchased date of your Surface (either On or after December 6, 2018 or On or after November 7, 2017 and on or before December 5, 2018)