Hello, we can negotiate first. If negotiation fails, you can bring a lawsuit. First, if a party files a lawsuit, it should first submit an indictment and submit corresponding copies according to the number of the other party. If the parties are citizens, the names, gender, age, place of origin and address of both parties shall be stated; If the party is a unit, the name, address, legal representative or person in charge of the unit shall be stated. The body of the indictment shall specify the facts and reasons for the request and prosecution, and the tail shall be signed or stamped with the official seal.

Two, according to the principle of "who advocates who gives evidence", the plaintiff shall submit the following materials to the court:

1, plaintiff qualification materials. Such as the original and photocopy of the resident ID card, residence booklet, passport, home visit certificate for Hong Kong and Macao compatriots, marriage certificate and other evidence; If the enterprise is the plaintiff, it shall submit a copy of the business license, business registration certificate and other materials.

2. Evidence to prove the plaintiff's claim. Such as contracts, agreements, debt instruments (IOUs, IOUs, etc. ), send and receive vouchers, letters, etc.