Measure your Net Promoter Score
Net Promoter is a simple powerful tool to measure client satisfaction with an indication of the growth potential of the product.
Net Promoter Score = %Promoters - %Detractors

What is the Net Promoter Score?
Net Promoter Score is a customer loyalty metric developed in 2003 by management consultant Fred Reichheld of Bain & Company in collaboration with the company satmetrix.
NPS allows us to understand to what extent a respondent would recommend a certain company or brand or product.
The average Company score should be more than 20 at least.
Kindly find below Net Promoter Scores of 60 Tech Vendors.

How do you know whether your company is performing well or not? you need to compare it with the industries and there average NPS. Check out below few of the industries and there NPS.

Conclusion
Aditional motivation is required to maintain the average NPS. It is best to communicate the customer whenever there is a negative review or complaint the delay makes it difficult to rectify the brand image.
Some of the books on Net Promoter Score