On a side note I hate the stupid jokes people make when I tell them I work for Metro/Connex. Or when I haven't seen them for a while and they'll say something like "So when are you fixing those trains eh?" I get enough of that crap at work, I don't need it on my time off buddy.
Do you want something to think about next time this happens? Someone I work for has people come up to him and spit on him; othertimes he has had people shout at him that he is a pedophile. Why? Because he is an Anglican priest. He hardly ever wears his clerical garb when he walk down the street to do his shopping anymore.
Besides, it's not the people who work for Metro that are the problem - it's the people who think we can run a transport system without funding it properly, and we all select who makes those decisions.
I've learnt not to ask people where they work as if their work defines who they are. People who do ask are not very tactful or mature. In my experience, most people ask a question along the lines of 'what do you do' that allows a general answer such as 'I'm in customer relations' and that allows you the choice of providing the name of the organisation or not.
I once had someone sing, as a deputy, in a professional choir I was conducting, who, when I started to say how much we would pay, replied that his work contract did not allow him to accept money from any other source. He never did talk about his work, and we knew not to ask him as he was clearly not at liberty to say for whom he worked or what he did. (But that in itself probably told us what he was doing.) I did hear someone ask him, in a social setting, what he did, and was interested in hearing how he slid the conversation away from that point.