Well, thanks everyone.
I was really just venting my spleen. Please don't think of me as some kind of disgruntled psycho on the verge of a workplace shooting spree.
What frustrates me is that they won't even entertain the possibility that it is pronounced the way it is spelt !
The way I look at it Halley is a persons name & names ( unlike certain words ie; castle & mall ) should be pronounced the way the owner likes to hear it or how they pronounces it themselves, regardless of geographical location or regional dialect. I've never heard of Elvis Preezly or John Leenon.