If you get an student discount which is $7 off every month for 2 years, and buy a $12 plan, you pay $5. At least that was the case for me, maybe he forgot to mention. I'm not sure.
Multimedia apps statement is very ambiguous and dangerous. Did you have an video or music app? Or a photo gallery app that users can publish copyrighted photos. Apple probably deserves right to remove your app if they see you as an opponent in the market. Please elaborate the situation and publicize your company name for good.