Who /big4/ here?

I have an Interview coming up with price waterhouse jewers and I really do not know what to expect. I've read what people wrote about their experiences at pwc and deloitte and honestly it doesn't sound really convincing. Another thing is that I'm living in a country infused with corruption so the fact that I do not know anyone inside the company will probably limit my chances.

So, for those who went through this, what was it like? What Questions did they ask?
How long was it?
ANY info is welcome. Doesn't matter if u got the offer or not.

Thank you
Yours Faithfully,
anonskovich