Recently, my mother received several messages saying that my brother owed money and didn't pay it back.

Is your brother caught in an online loan? First of all, the information sent by the other party is not credible. Everything is subject to court information. If the other party really brings a lawsuit to the court, the court will serve it to the party in the form of a summons, not a text message. Don't be scared by the information sent by the other party.

To take a step back, if your brother really borrows money from the online lending platform, it is recommended to repay it. If there is a big difference between the loan amount and the actual amount (that is, the cost is too much), it will not be supported by some laws. It is recommended to consult the local lawyer for the latest repayment situation, and a reasonable part of the loan must be repaid.