1. There are three credit card installments, one is special installment, the other is merchant installment, and the other is general consumption installment. The first two types require merchants to sign agreements with banks and there will be designated goods. Your situation should belong to the third type, that is, the usual consumption stages (if it is the first two types, it needs specific analysis). What you said can be paid by installments, but only 3 yuan can be paid by installments.

2. The installment payment part of the credit card is only for the part you overdraw. In layman's terms, it is only for the part you "borrow" from the bank. You can deposit the 2, yuan in excess of the quota into a credit card and then swipe 5, yuan together; You can also pay 2 yuan in cash and 3 yuan by credit card. But no matter which method you use, the result is that you owe 3 yuan in your credit card, and you can only installment this 3 yuan.

3. You have saved 2, yuan in your credit card, but you can only pay 3, yuan in installments. There is no question of 5, yuan in installments. Because 2 of the 5 yuan is your own, you don't need to pay back this part. What you want to pay back to the bank is only 3 yuan.

4. I hope it will be adopted, thank you. If you don't understand, you can continue to ask.