Legal analysis: if there is an agreement in the contract and the deposit is not refundable, it shall be handled in accordance with the contract. If there is no agreement in the contract, both parties can negotiate. If negotiation fails, they can bring a lawsuit to the court for settlement.

Legal basis: People's Republic of China (PRC) Civil Procedure Law.

Article 119 A prosecution must meet the following conditions:

(1) The plaintiff is a citizen, legal person and other organization that has a direct interest in the case;

(2) Having a clear defendant;

(3) Having specific requests, facts and reasons;

(4) It falls within the scope of civil litigation accepted by the people's court and is under the jurisdiction of the sued people's court.

Article 120 A complaint shall be submitted to the people's court, and copies shall be submitted according to the number of defendants. If it is really difficult to write a complaint, it can be made orally, which will be recorded by the people's court and the other party will be informed.