I attended 2 stages. Got through to the final.
At this point, I have been asked 3 times to suit the company's availability (which is fine), but the final confirmation never arrived.
At this point I've made my own judgement of the situation (not successful). Hey, it happens, right?
But having gone through 2 stages and never actually heard back - that's pretty poor. Chased for confirmation - and guess what, I have been ghosted!