Here's what I do.....
in reply to a message by Cynthia
My name is Zara and when I get "Zaahrahh" or "Sara" I repeat my name quickly after the mispronounciation. I generally only go to this effort if it's a new co-worker or someone who will be making the mistake often enough for it to really annoy me. It took one boss about 6 months to get it right...some teachers never got it. It is terribly rude, you deserve to be addressed by your name.