So this is a backdoor way to convert cat 7 into 30k points? Call in to book a cert stay (cat 1 to 4) knowing that the system will pull a cat 7. Also hoping the agent is not aware of this. Finish the stay then complain about your missing cat 7, now Hyatt will issue you 30k. You get a free stay and 30k points in exchange for a cat 7 cert. Success.