RSW,
Have you received the order with the case #? If you can get that information, or perhaps FHA can search it from an address/borrower name? I'd certainly report to your area HOC. I had to do the very same last week.
What has been happening is when the first appraisal comes in and the LO doesn't 'like' the report for whatever reason (declining market, value, adverse conditions noted), they fail to log the report. This leaves the case number free to be reassigned to the next, hopefully less diligent appraiser who'll hit their number or ignore the other issue(s). The LO says something like the first appraiser was on vacation, declined the assignment,... whatever lie they come up with. It's a blatant abuse of the system and the Denver HOC was interested in following up when I contacted them.