the interview was not difficult, they were asking just questions about previous experience. When they didn't like the answer, they were insisting on the question, to put pressure. They also commented that people like me they had thousands! I guess they were trying to make me feel bad about myself so I would not ask too much for the salary. So they never tell about the conditions, only after the candidate tells how much expects to earn, then they make an offer or not. In my case they were trying to offer the least possible! Also asked them how is it possible to live in a big city with that salary? according to them they know people who can survive like that....
In conclusion I had a bad experience as I never had before in other interviews, they were very arrogant.