If you're a business owner, you already know that the increasing popularity of review sites like Yelp and TripAdvisor gives your customers more power than ever. Just one negative review from an unsatisfied customer can cost you a lot of potential business. You might be thinking, “Well, I don’t have any bad reviews, everything’s fine!”
But do you really know how your customers feel?
If the answer is no, learning how to determine your customers' happiness score and improve your customer service will be one of the best time investments you can make.
https://www.entrepreneur.com/article/315576/