At present, there are too many people calling the telephone service of CCB Credit Card Center. You usually have to try a few more times. I am. Your consumption password and cash withdrawal password are just one. You need to call yourself to set it up. You can use the reserved mobile phone settings and then switch to manual service. As for changing the phone number, you should go to the counter to change it (the latest regulations). I can exchange your ID card and credit card for an appointment number. It's a little troublesome, but it's also for the safety of your credit card.