Pages is a core application. You don't update core applications on a standalone basis. You update them at the time you upgrade the entire suite. How are you thinking pages is not updated?
If you did somehow end up with a core application not updated, you would download a full version of the IPB software, which will include any of the core applications you purchased (Pages, Commerce, Gallery, etc) from the client area.
Upload them to your website, and go to domain.com/admin/upgrade. The updater will walk you through updating everything.
Also... support was moved to the forums here more than a year ago. IPS staff participate and help resolve issues. Everything starts here and if there is something that requires more advanced help or is private in nature, the staff can convert it to a ticket. This allows the community as a whole to benefit from each other. You get the help of other IPB users, you can see what other problems users have had along with the solution, and you have the ability to search for things much faster than just waiting for a staff member.