Different training institutions have different time. The basic process of refund is that the salesman first submits an application to the finance department, which submits it to the manager for signature, and then the finance department signs it. After the transfer, a salesman informed the refunder that the fee had been refunded and checked.
If there is no agreed time limit in the contract, the parties may require the other party to perform their obligations within a reasonable time limit by means of reminders, but whether the reasonable time limit is one week or one month is not clearly stipulated by law.