What to do if facing difficulties finding information about the seller

Respected Sir, I purchased the agricultural land Ac.3.12 from somone through the registered sale deed 3610/2016 and 1.08 from G.Subba Rao S/o Kotaiah on 18/4/2016 with sada binami  has purchased the above Ac.1.08 acre from his brother in-law who is brother in-law ofis continuously threatening us for the more amount and to avoid this we once again paid the 13.00 laks amount to  again taking the another sale deed from Mr Rambabu on 181-1-2017 in between the village middle person’s (PADDA MANUSULU). After that I requested several times to VRO and MRO for the pass book entry. I have also requested the VRO and MRO several times for the entry in passbook and revenue record’s, for this total land RI personal enquiry in the field also completed surveyor’s survey also completed but that record also not given to me. In how many way i can file the case