Be aware that some agency can't cancel/refund ticket.
China Train Reviews, Rating: 4.63 of 5 Stars!, Based on 2107 customers reviews
very useful for traveling in China. booking flights, train ,so simple and fast. This is a must for foreigner who wants to travel in China.
Easy to book and good info. Very comfy and easy to get around with train. Just be sure to have enough time at the stations. Get all your tickets at the first station, if you are having several trips with train. I love the bullet train, and the normal train for sleeping is great.
Before the departure date, you can change or cancel ticket in "My Bookings".
Change: you can change the depart date and time before the departure time, and you can only change once.
Cancel: If more than 15 days before the depart date, cancellation fee: 15% of total. If less than 15 days before dapart date, cancellation fee: 30% of total. Hong Kong train tickets charge higher cancellation fee: 30% - 50% of total.
After the departure time, the train ticket can Not be refunded. (within two hours after the departure time, you can only ask for change or refund in the train station ticket office by yourself)
What if I missed my train?
The only way is to goto the train station ticket office window, to change to other available trains in the same day (which departs before 24:00PM).
Remember the train tickets are non-refundable after the departure time, so please plan enough traffic time for getting to the train station, and enough time for collect ticket in ticket office window.