Rick came out to clean my fiance's car at work. She had some pretty set-in coffee stains on the rear floor mats. The product Rick used to clean the stains had a pretty distinctive "vinegar-ish" smell. The coffee stains were removed, but the smell lingered. I called Rick and told him about the problem, and he was kind enough to come out and flush the car again - not once, but twice - at no charge. Of course, I compensated him for the time he spent fixing the issue.
It is rare for someone to take pride in a service to the extent that they will return, no questions asked, until the customer is satisfied. Rick is a good guy, and runs his business the old-fashioned way. It is clear that he takes pride in what he does, and is concerned about customer satisfaction. Thanks Rick!