For property mutation

Recently in land revenue updating programme the tahsildar issued ror1B Copy to me mentioning ac. 5.28gts stands on my father name who had been expired as per my knowledge I know we have 20gts only which my father had purchased under registered sale deed and we had sold after my father expired,as I enquired about the balance 5.08gts as I got My father purchased property of land ac.5.08gts through unregistered sale binama in the year 1976 and availed passbook 1980,and purchased another 0.20gts through registered sale deed in 1982 and applied for mutation for total ac. 5.28gts,and got passbook with mutation proceeding papers as the copies enclosed are request application,mutation proceeding for total 5.28,notice,binama copy, and old passbook was enclosed in the file as I checked for the pagan record from 1975 to 2005 some pahanies entered my father name as pattadar and some Are entered the first pattadar and online pahani of 2017 year is on my father name as I applied for succession of mutation I came to know that the present pattadar column is showing other third party name as I searched for ec I find that the actual pattadar had sold the property 5.08gts to a person through registered GPA in 1996,he sold in 2004 to other person through registered sale deed and he also sold in 2008 Without getting mutation on their names to the present pattadar who had got mutation presently Under registered sale deed,I request you to suggest me how to proceed