Hi Tamrong,
My name is Stacey with the iTunes Store Customer Support Team.
I'm very sorry, but we don't provide support in the language you used in your email. We provide support in the following languages:
English
French
German
Italian
Japanese
Korean
Simplified Chinese
Spanish
Traditional Chinese
Dutch
Portuguese (Brazil)
I would be happy to assist you further. If possible, please reply using one of the languages listed above.
Thank you for your understanding.