Hmmm.......I think there is a relationship to an NZ company here.
In my personal experience the culture of being impolite and not bothering to communicate was alive with these people as far back 1984. I have experienced it again this year from their CP who possibly wasn't old enough have been crossing the road on his own then.
It's just the way they are......big fish, but their pond is small. Perhaps you are lucky not to work for them. I know I haven't suffered from not doing so. A lot of my mates have and don't generally speak highly of it.