I applaud you for your maturity and magnamity and such.
I once sent an invitation to a party to a woman who’d been introduced to me as ‘Mary Anderson’ – and that was how I spelled it on the envelope. In return I got an indignant phone call in which she reamed me out for not realizing that her name was actually “Merrie Andersen,” complete with lectures on why her parents had chosen that spelling of Mary AND a discourse on the ‘sen’ being due to Danish ancestry rather than the commonplace ‘son’ of English ancestry and how rude it was to assume you could spell a name and why hadn’t I checked…
I’ve never made a mistake on her name’s spelling again. Of course, I’ve never invited her to anything ever again either.
C’mon. My name is unusual, and hard for most people to spell or pronounce. I accept this, and answer to anything close enough to recognize. They are making natural mistakes, so why not respond with kindness or humor, instead of getting all huffy?