#0 - Nov. 4, 2008, 5:51 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.
Patch FAQ: http://eu.blizzard.com/support/article.xml?articleId=20110
Contacting Technical Support: http://www.wow-europe.com/en/support/technical.html
Full Support Site: http://eu.blizzard.com/support/index.xml?gameId=11&locale=en