KAL is a bloody nightmare for expats and I've heard just far
too many horror stories the past 20 years to ever go near the
buggers. This is just another one of 'em.
If they really like you you'll fail the final sim check, so as to
kindheartedly spare you further financial and career dramas.
There's no embarrassment for "failing" with KAL focault, the
entire industry knows how these bloody characters operate. I
dare say it could be a blessing in disguise, as your next job
will be more civilised, enjoyable and far more professional in
its attitude compared to Korean.