See the "How to obtain help" section of
http://support.microsoft.com/kb/953297
For home users, no-charge support is available by calling 1-866-PCSAFETY
and/or 1-866-234-6020 in the United States and in Canada or by contacting
your local Microsoft subsidiary. There is no-charge for support calls that
are associated with security updates. When you call, clearly state that
your problem is related to a Security Update and cite the update's KB number
(e.g., KB999999).
If your problem relates to a Cumulative Security Update for IE, call the
above number and ask to be transferred to the "Consumer IE queue" (which is
47830).
Or you can...
Start a free Windows Update support incident request:
https://support.microsoft.com/oas/default.aspx?gprid=6527
For more information about how to contact your local Microsoft subsidiary
for security update support issues, visit the International Support Web
site:
http://support.microsoft.com/common/international.aspx
For enterprise customers, support for security updates is available through
your usual support contacts.