Hello everybody! Thank you for your answers and advises
I've just signed the contract... NOT! Actually I found out that this company doesn't exist and these brokers tries to find stupid people. They ask for 3500e payment to sign the contract and they dissapears. They don't have any contract with any airline, they don't exist at all. Be aware!
And about the other advises... Yes I don't want to pay them to fly... But industry is already destroyed... I've sent 600 CV's... Nothing works...Easy to say what to do when you work already. But I have to face the reality and deal with it or dissapear....