Post the specific book and what's wrong with the metadata here: http://bookclubs.barnesandnoble.com/t5/NOOK-Book-Discussion/The-NOOKbook-Correction-Thread-Meta-data-Formatting/m-p/689606/message-uid/689606#U689606
Please note: metadata is the responsibility of the publisher, not B&N. Posting it in the metadata correction thread is no guarantee it will be fixed or how long it will take.
B&N cannot fix the problem, only pass it along. Some publishers are responsive, some...not so much.
Even when the metadata is "correct" (and there are some variations in practice), sometimes the nook does odd things. Like alphabetize titles that begin with "A" or "The" under A or T, respectively. Not really convenient.