1) Call again for an appointment , speak with a representative, not via automated system
2) According to another web site Chicago has walk ins if within 48 hrs of travel
3) Contact your congressman/state rep.
Just saw this as an example, maybe worth a try if all fails.
http://quigley.house.gov/services/passports
We may be able to help you expedite your passport application in an emergency, report lost passports and monitor overseas travel restrictions. To request assistance, please call my district office at 773-267-5926 or send me an email here.