Since I am an expat in Netherlands NS abuse this fact many times and got my money unfairly and I never objected until now. Last week on 26th of September I was traveling from Eindhoven to Brugge and on the way back home I got "caught" by the NS workers and get a fine for a travel that I already paid for. I say I paid for because you can find in the attachment I somehow "logged in" in an unknown place which was Roosendal and check out unconsciously and had a balance of -10 euro then in the train NS workers told me that I did not check in and wrote me a fine. This is not fair. you are more than double prize taking from my card and because your check in machines are not working properly and then you are making me pay even a fine. Please correct this problem. I already paid for the fine but I was also travelling with a friend and I both ov-chipkaart for her as well and she got fine as well for the same reason and I will also send you another message because of the transacties as long as I can download from ov-chipkaart webpage.
I know you are a monopole and you feel like you are free to abuse this fact but if it is necessary I will also go to the legal court to fix this because I suffered enough and lost enough money with all the delays and etc with the service of NS and OV chipkaart.
Please reply me soon,