When I have anything done with my car, I take the money I keep in one of the little drawers, my CDs, PO Box keys and the car registration, insurance proof and put them in the trunk. I then give them my second extra key. It doesn't open the trunk. They stole your glasses which no one could even use but they didn't know that. They were just out for your expensive glasses. And as a glasses wearer, I know what they cost.
Never give your full key ring people when having any car serviced like an oil change. Give them your second key or take the car key off the ring and take all valuables out of the car or secure them. My old car had a separate key for the glove box but this car doesn't have a lock on it.
Wow, crooks are everywhere and you never can tell.