complaint against the future typing company

I had complaint against the future typing company kotla mubarkpur  new delhi 110003. The company  had a work of typing in ms word of typing , they had golden or silver plans to take. So, had taken a plan of typing 400 pages in 15 days for 2000 rupees of registration. I had taken the work and paid 2,000 for it and then again they told me that you had to give 1,850 rupees more for making your salary certificate then I had to give that amount also because already I had paid, I can’t take it back then i again give them Rs.1,850. And they provided me the work and also they send me the mails for making agreement or all the pdfs and details about the work which i had to do. It contains there guidelines also that work get acceptance only in 80% accuracy of work. So, i started doing it and i had put my all the effort in 15 days and submitted the work properly and there’s proper accuracy in my work. I did the work by seeing all the things properly and then mail them. After taking more them 10days they are saying that your work did not get the acceptance , your work doesn’t not get 80% acceptance it is less then 70% so we can’t provide you salary. For this they sended me a mail about it that your work have error, line errors and space errors.