I am impressed with that clerk:
- she remembered you from 10 days earlier
- she clearly understood what had happened with the thief
- she cared
- she made a copy of his "invoice"
- she confronted him and fixed it

The easy thing to have done was just let it go. She is not the
stereotypical bright-as-a-turnip and/or asleep clerk. She is alert, has
initiative, and cares. Wow!

Bob