As for the extra charge of 15 yuan for your train ticket purchase, it may be due to the following reasons:
Fare changes: The price of train tickets may change depending on factors such as time and train number. You may have selected non-discounted time periods or specific trains when purchasing tickets, resulting in higher ticket prices than other time periods or trains.
Handling Fee: The handling fee incurred when purchasing tickets sometimes varies depending on different channels or time.
System Error: It may be that the ticket purchase system made an error when processing the order, resulting in overcharges.
As for the extra charge of 20 yuan when refunding the check, the possible reasons are:
Refund handling fee: The refund handling fee may be different under different circumstances, and sometimes the refund fee will be higher.
Refund time: There is usually a specified time limit for refunds. If the refund is within the specified time, the handling fee may be relatively low; if the time limit is exceeded, the handling fee may increase.
Differences in ticket types: The handling fees for refunds may be different for different types of train tickets (such as high-speed rail, high-speed rail, general express, etc.).
It is recommended that you contact the ticket purchase platform or railway customer service to inquire in detail about the specific reasons and handle them in accordance with relevant policies and regulations. Usually, the railway department will make reasonable adjustments and refunds based on the actual situation.