> For the complete documentation index, see [llms.txt](https://tailieu.kikilogin.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tailieu.kikilogin.com/trung-tam-thanh-toan.md).

# Trung tâm thanh toán

- [Trung tâm thanh toán](https://tailieu.kikilogin.com/trung-tam-thanh-toan/trung-tam-thanh-toan.md)
- [1. Giới thiệu gói cước](https://tailieu.kikilogin.com/trung-tam-thanh-toan/1.-gioi-thieu-goi-cuoc.md)
- [1.1. Giới thiệu gói cước Free](https://tailieu.kikilogin.com/trung-tam-thanh-toan/1.-gioi-thieu-goi-cuoc/1.1.-gioi-thieu-goi-cuoc-free.md)
- [2. Các phương thức nạp tiền](https://tailieu.kikilogin.com/trung-tam-thanh-toan/2.-cac-phuong-thuc-nap-tien.md)
- [3. Nâng cấp/Hạ gói cước](https://tailieu.kikilogin.com/trung-tam-thanh-toan/3.-nang-cap-ha-goi-cuoc.md)
- [4. Gia hạn gói cước](https://tailieu.kikilogin.com/trung-tam-thanh-toan/4.-gia-han-goi-cuoc.md)
- [5. Sử dụng mã giảm giá](https://tailieu.kikilogin.com/trung-tam-thanh-toan/5.-su-dung-ma-giam-gia.md)
- [6. Các câu hỏi liên quan](https://tailieu.kikilogin.com/trung-tam-thanh-toan/6.-cac-cau-hoi-lien-quan.md)