GroovyGeek

I am sure that this will be asked soon, so might as well add it to the list. The procedures for appealing Financial Aid are here:
USC Financial Aid - Applying & Receiving Financial Aid - Special Circumstances

Things to pay particular attention to:
USC Financial Aid - Applying & Receiving Financial Aid - Special Circumstances - Factors We Will Consider
USC Financial Aid - Applying & Receiving Financial Aid - Special Circumstances - Factors We Will Not Consider

To contact the FA office:
USC Financial Aid - Contact Us