Hello Walaiporn,
This is in response to your email regarding Office 2013.
Thank you for contacting the Microsoft Volume Licensing Services support center for North America. To better assist you, it will be necessary for us to redirect you to the appropriate support center in your region. Please redirect your inquiry to the email address listed below. As a courtesy, we have forwarded a copy of this email to them, and you may expect a response within 2 business days.
For Thailand, please refer to the contact information below: