Exactly
This is why it is very important to always get feedbacks or reviews from your customers. You need them in every business so that you will know the next step to take in your business.
I can remember when I was working for a toy company years ago and our boss will always asks us to personally contact our previous customers by chat or email asking them about their experiences with their last purchases. This is so that they will give us an immediate feedback which would even likely turn into another new sales when we recommend new products.