How would you handle a situation when the customer isn't happy with the outcome of a project?

"Sometimes a client might not be happy at the end of a project; however, I make it a goal to continually check in with them throughout the duration of the project so I'm aware of any dissatisfaction earlier on. This allows me to quickly fix the issue before it evolves into a bigger problem. I listen to the client's feedback during the entire process so we can make modifications as needed. If we still reach a point at the end of the project where the customer is unhappy, then it's a matter of listening and determining what changes can be made to increase their satisfaction. I'll never leave a customer unhappy with our work."