Fortis Hospital Bill

I admitted my wife to Fortis Hospital bannerghatta road, Bangalore. at the time of discharge, hospital first gave me a bill of higher ward type, for twin sharing and the amount was 142,127/- and after some insurance discount 131,247/-, when I checked, it was corrected and provided me a bill of Rs: 105,067/- and after discount 97,967/-. Further when I check the bill, some of the items were still charged as per twin sharing and then I received a bill worth 97,677/- , where they adjusted amount as another line of IP discount for Rs 290/- as they didn't have an option to correct the bill. Further I tried to verify the bill and found that some of the items were billed, not used on patient, and they provide me a final bill after reducing another Rs 820/- worth 96,857. I have 4 different bills from hospital, just wanted to know if this could be registered as a case against hospital. Regards, Sharad