Keep trying. It took me 18 months from my IR to get a job with a UK airline.
As for BALPA helping out, not much chance of that ever happening. They are just happy to charge you the money every year for an Employment Conference. In which the airlines all confirm our worst fears..... need to have loads of cash and be integrated.
Try not to let it get you down, harder to do than to say I know. Keep positive.
Moku.