1. service hotline: +86 (area code) 95566 (overseas, Hong Kong, Macao and Taiwan)
2. Credit card service hotline: +86 10-66085566 (overseas, Hong Kong, Macao and Taiwan)
This can be found at the bottom of official website homepage of China Bank, as shown in the following figure:
Extended data:
Other official service channels of Bank of China:
Customer service hotline (telephone banking): 95566
Credit card service hotline: 4006695566
Platinum credit card VIP service line: 4006695569
Transaction SMS number: 95566
Announcement notification SMS number: 106980095566
Sina Weibo: @ China Bank, @ China Bank Electronic Banking, @ China Bank Credit Card, @ China Bank Customer Service Center.
Tencent WeChat: Bank of China, Bank of China Weizhong Bank and Bank of China Credit Card.
References:
Bank of China official website
Bank of China-Contact us