Lakme Academy — regarding my exam

Address:	Sainikpuri high tension road, 500076
Website:	www.google.com/url?sa=t&source=web&rct=j&url=www.lakme-academy.com/&ved=0ahUK

Before 2 months there was an exam in Lakme academy Hyderabad Sainikpuri I gave my best in the exam but they are giving me any response and they gave me B grade...even though I was the best student..i asked to complain regarding this but there is no any response...i payed 63k and got this worst results...i want to know the reason or the process of reexamine