My dealer cracked the housing on mine. It was leaking after an oil change so I brought it back in. They accepted that they must have done it - kept it overnight to get the new one and replaced free of charge and gave me a free oil change. Not all dealers are evil. But... kinda sounds like yours is really jerking you around.

Like the others have said - I'd also want to see the cracked housing and also some justification for the claim of 2 extra hours. It is possible for the plastic threads on the filter housing to break off on the male threads of the oil cooler assembly where it mounts. That could be a PITA to remove. So there's one possible scenario I've heard of on these that could take a bit of time to fix. But it's really unusual.