Q: Key Note update

First, see > http://support.apple.com/kb/TS4236

Then, if it doesn't work, open App Store > Featured > Account (under Quick Links) > Show hidden purchases, and show Keynote, so you will be able to update Keynote to the latest version.

If it doesn't work, contact with App Store support > http://www.apple.com/support/mac/app-store/contact

Have you tried the second solution I gave you? That usually works. If not, you have to contact with App Store support because we can't do anything more

In this case, contact with App Store support