Listen patiently to what customers say from beginning to end. If people hear the other person repeat the topic, they inevitably want to stop the other person, so they say "I know" and don't want the other person to go on. But please listen to these repeated words patiently as an important part.
In the process of talking with customers or understanding and discussing countermeasures, you should listen carefully to find out the real intention of customers and see what their dissatisfaction or complaints are. If the customer you meet may not express very well, or he may stutter in his speech, but you must be patient to let the customer speak out his problems and hear the truth. It's important to say something that you can't or dare not say.