1. Call the local public security bureau directly and state the case and evidence in detail. Generally speaking, local public security departments have set up special anti-fraud teams to handle and investigate.
2. You can choose to report the case to the local public security bureau, explain the whole story and details to the police, and provide relevant evidence. Please take good care of computers, mobile phones and other items that may be used as evidence, as well as login account and password information, so as to grasp more clues.
3. Within the time limit prescribed by law, you can sue the other party through the local people's procuratorate or the court for compensation. This requires you to consult a lawyer first, understand your rights and responsibilities, and actively prepare litigation materials and evidence.