According to the relevant laws and regulations of our country, if there is fraud, or if the illegal purpose is concealed in a legal form, the contract can be declared invalid through litigation; If the contract is confirmed invalid, you can ask for the return of the due money. And the amount of fraud is more than 3,000 yuan, the public security organ shall file a case for investigation and investigate the legal responsibility of the perpetrator. If the amount is small, you can bring a lawsuit to the relevant court and ask the other party to refund the funds or complain to the relevant departments for settlement.

criminal law

Article 266 Whoever defrauds public or private property in a relatively large amount shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance, and shall also or solely be sentenced to fixed-term imprisonment of not less than three years but not more than 10 years, fixed-term imprisonment of not less than 10 years or life imprisonment, and shall also be fined or confiscated. Where there are other provisions in this Law, such provisions shall prevail.

Interpretation of the Supreme People's Court and the Supreme People's Procuratorate on Several Issues Concerning the Specific Application of Law in Handling Criminal Cases of Fraud

Article 1 Whoever cheats public or private property in an amount of over 3,000 yuan, over 30,000 yuan100,000 yuan and over 500,000 yuan shall be deemed as criminal offences respectively.

"Large amount", "huge amount" and "especially huge" as stipulated in Article 266.

The higher people's courts and people's procuratorates of all provinces, autonomous regions and municipalities directly under the Central Government may, in combination with the economic and social development of the region, jointly study and determine the specific amount standards implemented in the region within the scope of the amount specified in the preceding paragraph, and report them to the Supreme People's Court and the Supreme People's Procuratorate for the record.