@Marina450
First, IF the review written in Korean is truly offensive, then click on the little flag to the right of the review to get Airbnbs attention. Do you know about flagging comments, reviews and booking messages?
Go to the HELP section on your ABB accout and type in "Reporting a Negative Review" to give you the best tips and guidelines on reporting a review. This is also where you will learn about putting your mouse on the flag to alert Airbnb on anything you deem inappropriate.
But I must caution you, you have violated the CC guidelines yourself when you posted the guest name and booking confirmation number. Be sure to understand what is allowed and what is not in your future posts. And no one can see any messages written between you and any guests as that is private between you, the guest and Airbnb. I think you are confused on what the CC is all about. THIS IS NOT AIRBNB CUSTOMER SERVICE. This is the Community Center where hosts help each other. You need Airbnb.
Perhaps a good idea would be to contact Airbnb and request that they reach out to the guests to see what might have happened. You are always welcome to write a public reply to his review too. Good luck.
If you feel that me or another host have helped you, feel free to click on the "thumbs up" button at the end of any post. Thank you so much.
Aloha, Momi
Great way to contact Airbnb or via Twitter at AirbnbHelp / Facebook