i think the excuse given by the NSC is not reasonable. Try talking to them again. I am sure they are reading this already. I believe the NSC is very responsible these days due to their manager! :thumbsup: How old is your purchase. If its new, why not try to get a replacement from the store or something.
I sent my old D70s previously for sensor cleaning couple years ago and after that, it was still dirty (i shot on f22 white area to check). The senior tech came out to tell me, no one shoots at f22........ I was thinking, what if I was shooting studio portraiture and indeed I was using like f16 etc then.
Think the Techs need to be more educated and professional in handling the clients since these days, the internet is such a great resource and they cant really "bluff" their way through. We are not like aunties buying vegetables at the supermarket. Even they know how to fight for their own rights. =p