I have a general idea of your situation. Regarding your inquiry, I'd like to check a few questions with you in order to give you reasonable analysis and suggestions. Was it cash payment or bank transfer at that time, and when was the repayment agreed? Because you provide too little information, the key information of many cases cannot be confirmed.
Legal objectivity:
Article 125 of the Civil Procedure Law, the people's court shall send a copy of the indictment to the defendant within five days from the date of filing the case, and the defendant shall submit a reply within fifteen days from the date of receipt. The defense shall specify the defendant's name, gender, age, nationality, occupation, work unit, residence and contact information; The name and domicile of the legal person or other organization and the name, position and contact information of the legal representative or principal responsible person. The people's court shall send a copy of the defense to the plaintiff within five days from the date of receiving the defense. If the defendant fails to submit the defense, it will not affect the trial of the people's court.