Promising Improvements is a Customer Service Error

Well now, unless you're Japanese or otherwise come from a culture of performative apologetics, I do recommend dispensing with promises to improve. All promises accomplish is to massage the egos of high-cost customers. If you care to improve your service, simply do it.

That being said, if you are in court, the gravity of a promise is considerably different. But most customers do not carry the force of the law, and it is pompous disservice to higher institutions if customers are led to believe that they do.