China Construction Bank has no such quota adjustment method. The fixed amount of CCB's credit card cannot be adjusted, and the bank needs to take the initiative to invite it. Although it is an invitation by SMS, there is no need to call back or answer the other party's phone. After receiving the SMS inviting to adjust the permanent limit, you can apply directly according to the content of the SMS. This is the only way to adjust the permanent quota. The short message you received was randomly sent by criminals within a certain range, with the intention of inducing cardholders to call this number to obtain personal and card information. Don't ignore this kind of message. You can report it through 12 1 10 or 1232 1