pil

sir, actually i came to delhi for upsc coaching,i didn;t have any knowledge about which coaching institute is best so i searched on internet i found one coaching institute which was shown at no 2 , so i went there, and i paid him full money, but slowly i realized that i have made a mistake, that coaching institute has only 2 teachers which are teaching all subjects of upsc be it csat, essays ,ethics,gs ist paper, gs 2nd paper i mean every thing,my question is that can i sue him because they are advertising they are no two,but they haven't shown any result for many years, for two consecutive year no student from there coaching institue has even cleared pre exam, then on what basic they are propgating their genius,and many people are getting trapped because on net they are showing themselves no 2 so many aspirant who have searched on net like myself come here hoping they are really best, some come from up some from jand k ,some from maharastra etc.only to get cheated.and even some have paid 1lakh rs but have leaved coaching by studing only for one month,can i sue them on what basis they are propogating their genius, they haven;t got facility nor faculty,neither result.no one knew of them but through net they are fooling people from differnt states