My name gets butchered all of the time and I live in the States!
It's pronounced 'Max-eem' whilst most people see the 'i' and immediately assume it pronounces as 'um', so in essence I am always called 'Max-um' instead of the "proper" way. I guess this is in part due to the natural spelling / pronunciation of Maxim in the Russian language being 'Максим', the second-to-last letter being an 'e'. Anyways....