郵送で送り返す

Global Blueなら、
//www.global-blue.com/
Where to send my Tax Free Form?
You can send your Tax Free Forms using the prepaid envelope available at all affiliated stores. We recommend using safer mail service, e.g. registered mail.
In case you have lost the prepaid envelope, please use an ordinary envelope for sending your Tax Free Form to our Processing Centre.
You have to make sure that your Tax Free Form is stamped by the customs and your Tax Free Form is completed with all personal information, and that all necessary documents as stated in Rules and Regulations of the country of your purchase are enclosed. It is recommended that you make a photocopy of your Global Blue Tax Free Form, or to note the ID of the Tax Free Form (“DOC ID”) for your future reference.

にありように有料で送るか、

Contact us
For requests for general information click here
For requests for refund information click here
で聞くか、
Toll Free Numbers:
Japanにある電話番号に書いて指示を仰ぐ（事務所の住所を教えてもらう）
かでしょう。

諦めるというのも一つの手です。かなりピンハネされるでしょうから。