Ask Microsoft to:
Escalate the case to a human supervisor/manager.
Have the case manually reviewed rather than handled solely by automated support.
Microsoft's current support documentation confirms that service can involve repair or replacement depending on the product and region, and that newer Surface devices increasingly have repair options for components including displays.
Post your issue tagging @MicrosoftHelps with your SR number, device model, and a short factual summary — not a rant.