Are complaining customers good for the business? Why or why not?

Which of the following is/are true regarding Customer Relationship Management?

You have a very informative FAQ page on your website, but a customer still sends you a mail with a lot of questions. You should do all of the following EXCEPT:

When dealing with an angry customer:

Asking an unhappy customer not to leave a negative review on social media can be counterproductive as it may make them think you care less about them and more about your public image.

If you fail to honor your commitment to a customer, you should do all of the following EXCEPT:

When providing customer service on the internet, you need to make sure that:

A customer contacts you insisting on a quick resolution of their problem. You need to gather some information to offer them a satisfactory solution. What would be the best way to deal with the situation?

If a customer insists that you offer them a discount even though there is no ongoing promotion, you should:

To provide good customer service, you need to:

How can email interactions with customers be made good?