Leases allow for a certain amount of wear and tear...a few door dings, a few small scrapes, etc. What you are describing sounds worse. You can pick any shop you'd like to do the repairs. It's not up to the dealership. The dealer doesn't own the car, anyway, the bank does, and they don't care where you get it fixed.

Most lease inspectors don't look closely at the car to check the quality of repairs. They look for big/obvious stuff, they make sure the tires aren't bald, etc.