Nothing annoys me more these days when I have to make a call to some institution for technical support and I get someone in a foreign country and most of the time even though they can speak English it is heavily tainted with their own accent still leaving a language barrier.
I have nothing against other countries or languages, it's just that it can make things very difficult at times and most of the time when you're calling for support it's because something has happened that was unintended causing duress in the first place.