I just had an exam today.. and apparnently the teacher ?

so i had an exam and for the essay part , the teacher didnt want us to continue writing on the back side of the sheet, and i misunderstood what she said.. and then she reminds us not to like 2o mins before the exam finishes.. and i stilll had alot to write.... since i already wrote on the backside i simply just continued coz i had almost finished the page ... and then at the end of the exam i told her that and blah blah blah and shes like " no .. i cant mark it" and then she says " i dont want o discuss it now" ?????????? llike do you think that shes actuallly not gonna mark it ( im in highschool) and if not can i talk to the principal or i unnnooo im confused ........and on top of it i think i sprained my wrist and i stilll wrote the exam !!!!! and now im confused!!! :( ---- like come on the teachers being stupid like .. you give us something to write on but you dont want us to continue on the other side ( where your suppose too) .. shes being lazy .... she cant even flip a pagee !!