Yes! This is my biggest bug bear. Just call them Douglas and shorten it as a nickname.Names that should be shortened versions but they're called that...think Dougie, Reggie, Lennie etc...I just don't like it!
My sister has a shortened name as her name along the lines of Vicky instead of Victoria and its just weird. She always gets people assume her name is Victoria when it isn't. And it just looks unprofessional on her CV for example