I was working with a Verizon tech over the phone once, worst support call of my life (I'm an IT manager for a Managed Services co.).
I asked her to open a support ticket, in my name, and I began spelling out my name. At which point she barks at me "I can spell it."
So I spell it out for her again-
d-o-n-o-g-h-u-e.
Yeah, she had it wrong.