Carvill & Johnson Solicitors interview questions

Job advertised with no salary given. Email invite to interview. At end of the interview still not told salary. Just asked what sort of salary I would be looking for, so you play a guessing game. They must know what thet are going to pay but are going to select whichever candidate says the lowest salary. Thought this game had died out years ago! Quite appalling of them to do this to people.