The FAA Consumer Protection Division website can be found:
http://airconsumer.ost.dot.gov/CP_AirlineService.htm
There is a phone number and a web form you can fill in with any concerns you have. I did it a few weeks ago to post a question about IDB months in advance of the flight, and I received a reply a few days after sending the request for a DOT Analyst.
If you are going to the airport to challenge the IDB (still have the flight), you can download the pdf of the 14CFR250 rules to have with you when you need to speak to management.
Good luck, arctic!