Consumer Redressal

I have taken admission in frameboxx institute branch malad, my course was for 4 months, and now the sixth month is running, they have not completed 1/2 portion yet, sisnce 1 month they are troubling me with my lectures and wasting my time, they provide me a teacher who dont have even basic knowledge of subject, i complaint to their manager before 20 days but they are not doing anything, they are just giving me dates and dates but not starting my lectures, I pay their fees by my salary, and it does not worth. Please help me, i want to file a case against them. please help me sir/madam, please help.