You could take it into resolution but in situations where the tracking says delivered I would be doubtful the admins will side with you, that is unless there have been others who have also reported the same issue. Tracking is an interesting issue because it is used by many vendors to prove delivery to protect them against scammers, it also can be used by vendors to scam buyers, if you don't know how I'd suggest you spend sometime in the shipping board doing some reading.