Evaluate Customer Satisfaction without having to send questionnaires

[rascoia]

Hello To all

To start I want to congratulate this forum.

I ask for your help again, we have sent innumerable questionnaires of satisfaction to our customers, and few answer.

I have heard to speak in VOC (voice of costumer), this tool is useful?
With ours inputs I will be able to evaluate the satisfaction of the customer, without having to send the questionnaires?

I thank to all the help you can give to me.