@Imnotcalledthat ARGH!
YANBU!
I HATE it when people call me by the wrong name. I have a fairly large family, some 7 aunts and 7 uncles and about 12 first cousins, and I am the youngest of all them. When neighbours and various people (who had known my family for many years before I was born,) saw me, they ALWAYS called me by a sibling's name, or a cousin's name. 3 in 5 times I was acknowledged, it was someone else's name.
I also used to know someone I went to school with, and she ALWAYS spelt my name wrong on letters, and Christmas and birthday cards. So if my name was Ellen, she put 'Helen' or 'Hellen' and even Ellern or Ellenor.
She also always put my maiden name when addressing me, even when I had been married for 20 years!
She never got married, and all 3 long term relationships she had lasted 7, 8, and 11 years, and all 3 of them refused to get married, and all ended it with her. So I (and DH) think it was a swipe at me because she was jealous I was married.
She even said when I said I was getting married 'how has THAT happened. I should have been getting married before you! I have been with my Dave for 6 years!'
No congratulations, just annoyance and anger that I got married first... 
I told her multiple times that she had spelt my name wrong, and she ignored me, so I started writing to her with her name spelt wrong, sometimes a bit wrong, and sometimes outlandishly wrong. So if her name was Lynda Harrison, I put Harry Lindason, or Lynette Harris.
And when she wrote me one time (with my forename spelt wrong, and my old maiden name,) bragging about her new 'off-the-forecourt' car, and her new boyfriend who was (allegedly) on £150K a year, I never wrote back. This was 5-6 years ago. I never heard from her again until she tried to add me on facebook about 2 years ago, saying 'hi there name-spelt-wrong-again! how are you?!!! Here's some pics of my flat I share with Tom in North Staffs, thought I'd send them to make you jealous LOL!' 
Why on EARTH she thought I would be jealous of her one-bed apartment in Stoke-on-Trent I have no idea, but I didn't respond, and instantly blocked her. Haven't heard a peep since!
Sorry, went off on a tangent there!!! 