Call the customer, what if the customer doesn't reply to the text message?

If it's important, contact more times.

If you don't answer the phone or return the information, you can directly sue the court for repayment. If the debtor cannot be found after the lawsuit, the court will announce the service of the complaint and summons;

If the other party does not appear in court, the court may make a judgment by default. After the court's judgment expires, the creditor may apply for compulsory execution. Keep relevant evidence (such as the copy of the other party's ID card or ID number, contract, mail, short message, recording, remittance record, etc.). ) and sue him for repayment in time.

You should contact your lawyer in time to help you analyze and guide you on how to further collect evidence. Don't miss the statute of limitations, or you won't win the lawsuit. Protect your legitimate rights and interests.

It depends on whether there is time to pay back the money on the IOU. If there is, it is necessary to sue for repayment within the time. If there is no prosecution, the statute of limitations has expired and the lawsuit cannot be won. At the same time, it depends on whether you have any evidence to prove that the prescription has been suspended or interrupted.