Good day! I value the time you have taken to write back to us.
I would like to inform you that the refund for the purchase has already been issued. Within 10 business days, 699.00 THB should be posted to the payment method used to make the purchase.
Please refrain from purchasing in-apps until the developer confirms that the issue has been resolved. I have provided the developer’s link here again:
https://lg-cs.line.me/fm/public/inquiry/index
Note: Although we mentioned third-party products in this email, Apple doesn’t recommend or endorse these products.
If you have any feedback regarding this app, I would suggest you to give it in our official feedback page.
http://www.apple.com/feedback/itunesapp.html
I have also submitted a feedback on your behalf.
I trust that this information has helped to resolve the issue. Should you require anything further, please don't hesitate to respond to this email. Thank you for being an iTunes Store customer and have an amazing day.