These things take time and I wouldn't keep calling them, it'll take as long as it takes. I applied for a job (working on the railway) in December '15, I had in interview in September '16 and a start date next month. I didn't phone up and ask for timescales at all, I knew that the process took time and that at some point I'd get an interview. If anything, the railway recruitment world is slower than the aviation equivalent.
In the meantime, keep an eye out for any other programmes for which you're entitled to apply, the recruitment processes may be slow but aviation can move pretty fast.
Edited for clarity.
Last edited by Chris the Robot; 26th Jan 2017 at 13:38.