Actually now heres a funny story.
When I signed up to a property agent recently, they misheard my first name as Barbara (demn English people who have never heard foreign names). I corrected them and spelt out my full name.
They still put me down as a Miss.
When I went to view the property, the guy told me he was expecting a Miss (my surname).
I didnt feel brave enough to go along with it. I just said 'well, obviously thats not right', and I later corrected my details over the phone.