You don't want to hear this, but whenever the bike is out of your hands, or you are not looking over the guy's shoulder, it is going to get scratched, dented, scraped, cracked or broken. It takes longer to do things with care and attention, so shops prefer to race through the job. You will never be totally satisfied by them.
To minimize future anguish, learn to change your own tires. And buy the correct spoons. You don't need an expensive machine to change a tire. You need time and energy and patience.
Or be like me and have a friend who has these attributes.

I miss him now that I've moved here!