Within seven working days. According to Article 15 of the Measures for Handling Consumer Complaints by the Administrative Department for Industry and Commerce, the administrative department for industry and commerce with jurisdiction shall complete the handling and inform the complainant within seven working days from the date of receiving the consumer complaint, and accept the qualified complaint and inform the complainant; Complaints that do not meet the requirements will not be accepted, and the complainant will be informed of the reasons for not accepting them.