He probably just means his rakeback calculation/estimation page.. which is an estimate. It usually says so on the page...
From the RB site he was talking about..which I also get RB from, but for a different site:
The data in Rake Tracking is for informational purposes only, and actual rakeback payments are made according to poker room final reports for the rakeback periods. These final reports may contain deductions or data updates that are not visible in Rake Tracking.
From another RB site I also get RB from:
Please note that while all information is updated regularly, updates are not instant. Final statistics are subject to change based on weekly and monthly reconciliation. For more information, please see our FAQ page.
If someone is taking money directly out of your poker account(what it says in cashier, not on your RB webpage)..CONTACT SUPPORT IMMEDIATELY!