im just about to say screw it and say i learned my lesson and will never buy another nzxt product... fair enough ^_^
You confused me with the comment about the 3-4 pin adapters..I assumed you had plugged the fans into the mobo. It does seem likely that poor wiring is to blame.
I have a phantom, but have hardly unboxed it yet as I have some quite extensive modding plans for it. It is a very nice case though.
Its just a little fan controller so it should be easily remedied..
I recommend you contact RMA at NZXT ASAP. Also you might consider adding a review on newegg as the manufacturers often have workers surf the reviews to catch problems and correct them as soon as possible. I've seen them correct problems within 24 hours this way. This seems a minor issue considering the quality of the case but I would be pissed too. Give NZXT a chance to make it right.