> For the complete documentation index, see [llms.txt](https://hd.gobiz.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hd.gobiz.vn/dich-vu-taobao-global/van-hanh-chung/quan-ly-don-sau-mua/3.-khieu-nai-nguoi-ban.md).

# 3. Khiếu nại người bán