I was on a train in France yesterday. I was fined without being told in advance. I was initially told that I hadn't paid correct train fare and needed to pay the difference. I agreed to pay but didn't check the amount. Inspector left without handing receipt. I asked for receipt and only then realised I had been fined due to amount. I went after them and asked for ID as I wanted to lodge a complaint. They refused to give me their name. I got angry and tried to take a photo of them and also attempted to turn over the badge they were wearing on a lanyard. I touched the badge but not them. A fellow passenger intervened and calmed down the situation. I can't settle ever since - is this a case of me abusing the inspector in any way? They definitely abused their power and to fine me. I went to local information office and was told this is a common recurrence in this area. The info is not clear for tourists and they take advantage as they get 10% of each fine. My only worry is whether my trying to see their lanyard, thus touching it and trying to turn it is an offence?