Maybe the credit certificate you provided at that time was too little, so the limit was low. The normal method is to apply for a permanent balance adjustment after using the card for a period of time. Many banks can apply for a limit adjustment after using the card for three to six months, and the maximum can be adjusted to 1 times the original limit. In this way, the card limit will gradually increase.

However, the quota given to you is too low. If you are dissatisfied, you can try calling their customer service number to complain and see if they can adjust your quota through unconventional means. However, it is troublesome to complain, and it is easy to get angry.