Consumers can choose to negotiate with the merchants when they encounter the problem of refund. If negotiation fails, you can report to the Consumers Association for mediation. If mediation fails, a lawsuit may be brought to the relevant people's court.
Litigation refers to the activities of the national judicial organs, that is, the people's courts, in accordance with the law, with the participation of the parties and other participants in litigation, to solve litigation disputes according to law.