I saw it announced recently that they would stop charging. We pay enough for the trains as it is.
When I was in Berlin recently I used the toilet in the cathedral, which we had paid to visit and there was just a plate outside for tips for the cleaner. I chucked a few cents in there and she accosted me when I came out to say it was too little. I didn't even have much change on me. Just annoyed me a bit.
Not surprised you were annoyed, its not as though we can veto our waste is it?