Dear sir/madam,

Greetings! I bought a children day ticket at 4/2 on Saturday, and I got from Rotterdam to Amsterdam. But when I checked out, I accidentally scanned my ov chipkaart because I thought it was the check in for the train. It fined me 20 eruo on my ov chipkaart. Is it possible to get my money back? The ticket I used at that day is 54009846. Thank you so much in advance.

Is it allowed to travel with a children day ticket at your age? 

Hello Yuyue Xiao, welcome at our community,

If you have an e-ticket and have used your OV-chipcard by mistake, then the best thing to do is to reach our customer service to solve this.