You normally do better.
Mike thank you for your business. Please tell us how we can do a better job for you in the future. We would like to get to that great business in your eyes instead of average. Thank you again.
Thank you David for your business. We are sorry to hear that you were not happy with the price point of your service. We do hope that the service was good and the problem was taken care of. Thank you again.
Either way - thank you for taking care of me, you have always treated me well!