The museum is nice but the restaurant in the first...

The museum is nice but the restaurant in the first floor has the rudest staff I have seen in Lyon so far, we made a mistake taking our seat ourselves instead of waiting because there was no one there to ask. After that the waiter started being unbelievable rude to me and my mother saying "now thanks to u I have to clean all the stuff you touched.. Unbelievable" if we make a mistake you can tell us that, no problem but in a nice way.
When I said to him that a sign in english would help (its a museum where a lot of tourist are). He answered very rudly that we are in france and there is no need for any other languages than French here. When I told the waiter that French was not my first language he look at me in a way I would have loved to punch you in the face.