If a customer purchased a car wash coupon code that did not work, what would you do?

This question is a basic customer service query where the interviewer wants to know how you would react in a situation where you may have a frustrated customer. Car wash codes can glitch, and often, it's at the worst times - when there is a big lineup of cars waiting. Put yourself in this situation and discuss with the hiring authority how you would jump into action to help out a customer.

"I had this situation happen a few times, primarily before our service station updated our car wash system to a more automated approach. Previously, I could catch an issue on the camera, if a customer's code was not working as it should. I would run out to the car wash area, perform a hard reset, and then ask the customer to punch in the code. Overall, this type of instance would delay the car wash line just a couple of minutes."