#0 - March 23, 2010, 9:13 p.m.
http://eu.blizzard.com/support/article.xml?articleId=20110
They are there for you by phone and email (http://www.wow-europe.com/en/support/technical.html), and you can access the full support site below – which also includes general assistance on in-game topics and new content.
http://eu.blizzard.com/support/index.xml?gameId=11&locale=en