I'm currently having trouble with both My xbox and Windows ID.
Basically I cannot buy any DLC, films, or games on xbox or xbox.com because 'this item is not available in your location'. After a lot of searching etc I found my Windows Live ID was displaying German.
I cannot change the language/location as when I go onto my ID it says United Kingdom/channel Islands.
I've tried phoning Microsoft, Windows Live ID and xbox support and none of them have answerwed their phones after 15 minutes of waiting.
Anyone have any ideas?