Ok, in the part where the Keeley's are in the apartment, they are confused about the pronunciation of the Goldman's last name and Armand says "Coldman the d is silent". Later on in the movie when the photographers go to the doorbell to the apartment, the last name is spelled "Coleman". Where's the silent d?
This is because they changed the name because the girl's parents didn't know the truth about Armand and his family. The name confusion started when the girl (I don't know her name) told her parents a different surname.
OK, but if the parents went through the side entrance, which i am assuming they did, then they would have seen the name above the bell and there wouldn't have been any confusion anyway.