To help everything go smoothly when you call us, please have your American Express Merchant number ready. 
For your security and to protect your information, we will ask you a few security questions to make sure we are speaking 
to an authorized person for the Merchant Account number provided. 

Merchant Services Hotline:

2277 2277

(Monday to Friday, 9:00am – 6:00pm) (except public holidays)

Card Authorizations & Fraud:

2277 1234

24 hours a day, 7 days a week

Terminal Troubleshooting:

Please call your terminal supplier (the number provided on the terminals) or call the Merchant Services Hotline on 2277 2277

(Monday to Friday, 9:00am – 6:30pm) (except public holidays)

Branch Additions/New Business:

2277 2277

(Monday to Friday, 9:00am – 6:30pm) (except public holidays)

Travellers’ Cheque Authorizations:

3002 1276

24 hours a day, 7 days a week

Written Correspondence

American Express International, Inc.

Merchant Services

18/F, 12 Taikoo Wan Road, Taikoo Shing, Hong Kong