How to reach support (FAQ) - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=2421771&SiteID=2
If you are a paid subscriber, even if you haven't been able to activate your subscription -
Unofficial path - send me an email at sboots@mvps.org with a subject line including "OneCare" (to get past my spam filtering) and in the message body, tell me what country you are in, your forum nickname, and paste this link:
http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=4198622&SiteID=2
I am not online 24x7, so you may be waiting for a reply, but I'll do my best to hook you up with support.
By the way, it might be possible that we can help, if you had provided some details about what problems you are encountering with the installation instead of posting your same complaint about a lack of support 3 times. I answered your first post with the same offer to email me on 11/30 - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=4189449&SiteID=2
-steve