1. negotiate a refund with the merchant: consumers can directly bring the POS purchase slip and the purchased goods to the consumer's merchant to apply for a refund. The merchant will check clearly and confirm that the goods are in good condition, and will help to operate the refund later.
2. Contact the bank to apply for handling the disputed transaction: if you spend online, you can directly find the platform seller to initiate a refund, and then the seller will return the refund funds in the same way.