Hello, this is Borbone Coffee.
I'm sorry if I made you uncomfortable. It seems that the invoice was issued due to a mistake of the person in charge because the customer's address is Jeju Island. 5,500 won has been confirmed, and the invoice cannot be modified now, so you will inevitably have to refund the customer directly.
Please reply with the account number and bank name in the name of the customer who will be refunded. Sorry for the inconvenience, but if you have not paid the shipping cost yet, the invoice has not been modified, so please pay.