08
Online support
Our official support channels, staffed hours, what we help with, expected response times and how to spot an impersonator.
- Effective from:
- 07/23/2026
- Version:
- 1.0
Service provider details
The details below apply to every document on this page.
- Company name
- HA LONG DIAMOND BAY CO., LTD
- Trading as
- DIAMOND BAY
- Enterprise code / Tax code
- 5702224433Issued 29/04/2026 by the Department of Finance of Quang Ninh Province
- International travel business licence
- 22-0208/2026/CDLQGVN-GP LHQT
- Registered office
- Bai Chay, Quang Ninh, Vietnam
- Phone / Hotline
- +84 78 2224433
- info@diamondbay.vn
- Support & complaints email
- support@diamondbay.vn
- Personal data email
- privacy@diamondbay.vn
- Websites and domains covered
- diamondbay.vnhalong.diamondbay.vncruises.diamondbay.vnma.diamondbay.vndiamondbaycruises.comdiamondbaycruises.vndiamondbay.com.vn
The Vietnamese text is the original and the legally binding version; this translation is provided for convenience.
8.1Support channels
Diamond Bay provides one or more of the following:
- Hotline;
- Official contact email;
- Contact and complaint form on the website;
- Live chat on the website;
- Zalo and WhatsApp on the hotline number;
- B2B account and support tickets;
- Official social channels: Facebook, TikTok, Instagram and YouTube.
Only accounts linked from the official website or published by Diamond Bay count as official support channels.
8.2Support hours
- Emergency hotline during a journey: 24/7;