If there is an overdraft, there will be a withdrawal fee and interest. The cash withdrawal fee is 0.5% of the cash withdrawal amount, with the lowest 2 yuan and the highest 50 yuan. There is no interest-free period for overdraft withdrawal, and interest of 0.5 ‰ of the cash amount will be charged every day from the date of withdrawal.

Then if you take 1000, the handling fee is 1000*0.5%=5.

Your available line is 25000-1000-6500-680-5 =16815, but your actual available line is 166 15, with a difference of 200. I guess it may be that you still have the amount you have spent, but it has not been recorded yet. Because as long as you spend, the available amount will decrease, but the balance will not change until the consumption is recorded.

You can log in to the credit card website of CCB again in the past two days, click "Bill Integral Inquiry" to enter the card number and telephone banking password, and then you can inquire about your card account, and then you can recalculate.