翌日(3/19)回答があった
"For this case, passenger’s ticket it is a promotion ( T ) fare, therefore passenger can do refund only airport tax ( 100 THB. Per/ segment ) If passenger would like to do refund please confirm back again not over 90 days from departure date.
Require document
- Copy passport of passenger (pic) all passenger
- E-ticket"
出発予定日が過ぎた4/29に上記必要書類を添付したメールを送信。
5/1に返信があった
"We already received your document. After we will do process for refund and process take minimum 45 working days.It's not include saturday and sunday and public holiday."