Unpaid customers are creating a nuisance and it is a despicable crime.
So I decide to accuse them of fraud.
I will proceed with the following procedures for all unpaid customers.
1 I report paypal .
* It is possible that paypal freeze your paypal account.
2 I report to the police in your country.
3 I share your information in Japanese sellers community.
* It is possible that you can't have a transaction with other Japanese people.