I am going to live it up to you about how to respond to adversity. It may mean that your product or service or delivery of message it’s not good. Here is the opportunity to learn from it or loose a customer. How many customers can you loose?
What do you know about the Golden Rule. Treat others the same way that you want to be treated. Listen or read to their comments and take them as constructive criticism. Something to learn from to make your product or service better.
Another detail to be mindful is that every one else it’s watching or reading your response when they are looking to do business with you for the first time.
A positive response will live a better impression. JP