The rep who sold me the Surface lied to me and the company refuses to honor the $100 post-sale credit they promised. Even though it was written and saved in the chat log. Two follow-up chat conversations and a very long phone call to sales support and each time was told "we can't do anything, but we've put a note in for the chat rep and they will contact you tomorrow to fix this". All BS. No one ever follows up. Asking for a manager gets you hung up on. Which means another 30 minutes on hold or waiting for a chat rep to respond.
I will never buy another Microsoft device again.