damn, what should i do next?

yesterday, its the day of my good and bad rank, when i receive my report card, i have great result, but i flunk at indonesian and math, ok when i saw my math flunk "hhmm oke" but when i saw my indonesian,"god damnnn!! what the heck??? how could i flunk indo, its weird for me , because i always have good rank at indo! this is just bullshit! X( hope you guys did well at your test! XD