For your uncle's a/c, I'd do the following:
1. If he has comprehensive insurance, contact his insurance company.
They should cover the damage less his deductible.
2. Shop around for price. Call a few places in the area that do a/c or
radiator work. Since the problem has already been diagnosed, you'll
already know what it needs for them to price it for you.
For your Sonata-- no, it doesn't have to be broken to be covered. Factory
warranty covers your vehicle against defect in material and workmanship.
If the dealer refuses to repair the vehicle, call Hyundai Customer
Assistance and make a complaint. The peeling chrome is a well-known issue
to Hyundai. To my knowledge, we've never had a claim refused on this item,
and I've replaced several handles for this very reason. Not only is it
annoying, it can injure you-- the peeling chrome is SHARP!
While the dealer is most likely correct about the A/C condensor, they're
feeding you pure B.S. on the door handle. If they refuse to give you
proper warranty service, don't give them any service work you'll need to
pay for, either.