Legal analysis: 12366 tax service hotline is a hotline number specially approved by State Taxation Administration of The People's Republic of China for the national tax system on July 1 2008 to provide tax service for taxpayers. In order to provide quality services to taxpayers, the national tax system 12366 tax service hotline was fully opened on July 1 2008.

Legal basis: Article 41 of the Constitution of the People's Republic of China * * * Chinese citizens have the right to criticize and suggest any state organ or functionary; Any state organ or state functionary has the right to lodge a complaint, accusation or report to the relevant state organ for illegal or dereliction of duty, but shall not fabricate or distort facts to make false accusations or frame up. For citizens' complaints, accusations or exposures, the relevant state organs must find out the facts and be responsible for handling them. No one can suppress or take revenge.