Sep 27, 2012
You can report a PSN ID/User using the this link:http://np.us.playstation.com/
It's worth noting that some games have their own in-game reporting feature, whether the game you've mentioned has this I don't know.
Customer Service - 1-800-345-SONY (7669)
Account & billing Support -1-877-971-SONY (7669)
Available Mon to Fri 8am - 8pm PST
Live Chat Available Mon-Sat 6am-10pm PST & Sun 6am-8pm PST