A customer has asked for a refund on a computer purchased from you. Your boss has looked at the situation and finds the request unreasonable. The product in question has been repaired and returned and the customer admits continuing to use it, but complains that it does not do everything your firm advertised it would. Write a formal letter using block style. Tell the customer there will be no refund, but do so in a "you-oriented" way in which you have a chance of maintaining a relationship going forward.