For selfish and unselfish reasons, close the loop. It is critically important to give service providers feedback on the quality of their service, even if it’s awkward and inconvenient, and especially when they don’t ask. Why? Every piece of feedback is like pixel being updated. The service provider gets a more complete and updated picture of the design of their service may be lacking. The picture emerges over time and changes as the service encounters new challenges and opportunities. Services are complex products that even when designed, take time to evolve in way that is more continuous than the manufactured product. Services are products of materialization.