The Users, God, The Users!

What part of STOP. USING. THE. OLD. ORACLE. SYSTEM. do they not understand?

Possibly the word "stop". I hadn't run an extract in over a month. During a clean-up this morning, I ran an extract for the whole month of December, thinking there would be one or two. There were THIRTY TWO new records.

What can I do to get an idea into a Database User's brain? Short of writing it on a cannonball and firing it at their thick skull?