Be professional and don't burn your bridges - it's a small world.
They are simply saying what they are thinking which in many organisation they would not tell you but then refuse to offer you any support.
Companies generally do not give personal references because of potential legal action but they can refuse to make any comment - which says more
Now many pick up the phone and speak to each other to verify....
Whatever the airline offers - be it peanuts or very good salaries - if you choose to accept the terms - then do your time and be professional.