Go after Coverage one to cover it. That's your warr you paid for and they would have to deny which should give you grounds to go after your money back if that's the path you wish to travel. It sucks I see it everyday.
Ziggy the dealerships do typically get hosed on warr work. There are different job book times some vary to such an extent that the service tech loses money doing the job. There are the Mitchell numbers and then they set up a vehicle in a lab and every tool needed laid out and see how fast it can be done. There are very few techs that I know that make money on warr unless they make special tools and or cut corners (both happen)