Dear nikhilnj2004,
There are some novice sellers who don't understand the importance of listing at the right places and list products in the wrong categories. This does lead to buyer unpleasantness as you have rightly pointed out.
We, always, continuously, keep on educating sellers on the importance of listing in the right categories. If you feel that a particular seller is doing it again and again, please contact on the following to report against this seller
http://pages.ebay.in/help/contact_us/_base/results.html?tier0=report_listing.html&tier1=2&tier2=4&datafile=report_listing.html&item_id=&routing_code=LP%3DC00136&contactTitle=Report+a+listing+policy+violation+or+prohibited+%28banned%29+item&continueButton=Continue+%3E
With regards
D.J. Basumatari
Category Team
With warm regards
D.J. Basumatari
Category Team