#0 - Oct. 13, 2008, 7:22 p.m.
They are there for you by phone and email, and you can access the full support site here – which also includes general assistance on in-game topics and new content.
FAQ: http://eu.blizzard.com/support/article.xml?articleId=20110
Contact information: http://www.wow-europe.com/en/support/technical.html
Support site: http://eu.blizzard.com/support/index.xml?gameId=11&locale=en