Apple's customer service is hell. Don't envy anybody to have to deal with this. The "Cosmetic damage and not covered by warranty" line is similar to what I had as answer when after one week of sitting on a desk without any mistreatment I had a crack in the glass of my pre-retina MBP.

Called them and had an endless loop of

- "I think this is a manufacturing fault"

- "Cracks in the screen are ALWAYS accidental damage and not covered under warranty"

- "But I didn't have an accident with it, so ..."

- "Cracks in the screen are ALWAYS accidental damage and not covered under warranty"

... and so on and so on.

Now, after the most recent graphics board meltdown I am on an XPS13 with Ubuntu, and I can honestly say that apple are off my shopping list for good.