Help center
Contact the HEX Voice team via Zalo OA, phone, email, WhatsApp, or Facebook Page. We're here to help.
Zalo OA
Chat directly with support via Zalo Official Account.
HEX Voice
Message on ZaloPhone
Call the hotline during business hours for quick help.
1900 xxxx
Call nowSend detailed requests, invoices, or technical support.
support@hextech.vn
Send emailContact us on WhatsApp if you are abroad.
+84 xxx xxx xxx
Open WhatsAppFacebook Page
Follow product updates and message us on Messenger.
HEX Voice
Open FacebookNeed technical docs?
See the API guide, TTS integration, and sample requests in the product docs.
Support hours
Mon–Fri · 9:00–18:00
Average response
Within 1 business hour
Sales
sales@hextech.vn