Consider yourself lucky.
they don't have to cover anything. They could tell you to go fuck yourself, and make you get a lawyer file a lawsuit, and threaten Toyota Corporate, THEN do the work.
Trust me, I did just that.
Now that sir is customer service.
You... "Can you fix my engine for me?"
Them. "that depends, can you go fuck yourself"
You... "Yeah, but how is that going to help?"