02 1 is the area code of Shanghai. If it is 02 1-38690588, this is also the customer service phone number of CCB, which may be from the credit card center.

Baidu searches China Construction Bank-Credit Card Channel, clicks "Service Guide", slides down to the bottom of the webpage, and selects "Online Customer Service". At this time, a dialog box will pop up, select "Online Communication", enter your own question "Is there an official telephone number of CCB starting with 02 1", and CCB customer service will answer it.