CV okay but HR screwed up
I was once interviewed for an industrial placement at DEC, and the interview came to an abrupt halt when the interviewer started asking me how and where I learned Arabic.
Turns out their HR had accidentally short-listed me for a post specialising in DECWindows Arabic localisation rather than a standard placement, and sent to a different interview location to where I should have been.
Needless to say, I didn't get the job, and my placement tutor tore me a new one for being a "no-show" for my proper interview - he did apologise when DEC 'fessed up to their mistake.