1. Appeal: Download and log in to the personal income tax App, and click "Employment Information" in the "Personal Center". If there is indeed a company that fraudulently uses personal identity information to file tax returns, click "Appeal" in the upper right corner, and then fill in the relevant information to appeal.
2. Solve it through legal channels: collect evidence, call the police and impose administrative punishment on the infringer. According to article 17 of the People's Republic of China (PRC) Identity Card Law, anyone who uses another person's identity card fraudulently shall be fined between 200 yuan and 1,000 yuan by the public security organ, or detained for less than 10 days. If there are illegal gains, the illegal gains shall be confiscated.