After the train ticket was refunded at the railway station, there were no text messages and emails, and the money did not arrive. What happened?

I've been in this situation. My reason is: I bought someone a ticket and the ticket was refunded. He didn't ask me where to retreat. I waited for a while and didn't receive the message. Later, I learned that the ticket was returned to the card of the person who got on the bus with the ticket, that is, the person with the name on the ticket. As for how to know that it is returned to this person's card, I think we can search this person's card in the banks of this city according to the ID card, and then

The above is my personal experience, and my conclusion is based on speculation. Please consult at the railway station for details.