Excuse me, the house I bought has been renovated, and now there is something wrong. Who should I deal with? Ask for a complaint "It is useless to contact the property and engineering department."

Why didn't you find it when you inspected the house before renovation? You are looking for a developer to repair the main project of the house. Did they give you a guarantee of the quality of the house? If it is old, it will be easy. You can write a material about the main problems of the house and complain to the real estate department of the local housing and urban-rural development bureau with the guarantee of the house quality. /kloc-If you don't reply within 0/5 working days, you can expose it to the media and the effect will come out immediately. Hehe, I wish you an early solution to the problem.