In my opinion, he used to work with another company before work here. It means he has an experience so he must work better than this especially in term of Service. The customer complained me about him for two times in the same company. The clause of this problem is probably collecting data is not pretty good and it is not enough also. In my team, I concern about service and relation so much. After this problem occurred recently he had an action to learn to solve their problem already than I think it pretty good for him. For the open a new customer and target sale is successfully more than Pang.
However, everyone in my team has not only advantages but also we have disadvantages. So I'll think about their abilities when I assigned them duty. Finally for disadvantages, everyone in my team would like to improve and develop ourselves to be better. We will try our best.