Here's a LV example. A few weeks back we replaced all the knobs in our kitchen. I bought several different ones to take home and choose from.
When I returned them and bought the 24 of our choice, the LV employee at the till forgot to credit the returns (about $10).
When I got home from work the next day, there was voice mail from her describing the error and asking me to call her back and let her know how I wanted the refund dealt with.
Customer service, customer satisfaction.