1. Explain to the customer that the installation of the door was completed within the time agreed by you and in accordance with the requirements stipulated in the contract. Relevant supporting materials can be provided, such as construction contracts and payment vouchers.
2. Explain to customers your requirements and inspection standards for construction quality, and show that you have carried out relevant acceptance work. At the same time, you can also ask customers if they have special requirements or opinions, so as to solve the problem in time.
3. You can discuss further treatment measures with customers, such as re-acceptance or replacement of door leaves. No matter what measures are taken, we should keep smooth communication, fully respect the opinions of customers and try our best to maintain the reputation of the company.
In the face of customer feedback, you need to listen carefully to customers' opinions and respond in time. If customers have questions about your work, you need to answer their questions patiently and help them solve the problems as soon as possible.