Your most unhappy customers August 1, 2014 by Maura, 0 Comments, in Quotes Your most unhappy customers are your greatest source of learning. Bill Gates ← Previous / Next Story → Tags Quotes About Maura You may also like Flooded with information Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *CommentName * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email.