Family Property Dispute

Father and Mother both are Alive. Plot is registered under my Mothers Name and she is the Absolute Owner- Plot is in Bangalore alloted by KHB. Purchase of Plot was been one by taking Loan from my Father and selling a ancestral plot in Bangalore.5 houses with is been constructed by selling 4.5 acres of Ancestral property inherited by my Grandfather to Father and the Sold Amount has been invested to construct the house. There has been no agreement or sign Selling has been done on verbal agreement between my Father and his Brothers. 4.5 acres sold to own brothers by my father. I have invested 7.5 lakhs from my savings to construct the house and the proof is just a written diary in my Fathers Handwriting that is the only proof what I have. Now Father has forced me and my wife to get out of the house and have done an NCR in Police Station that I should not come to stay in the house and have no Legal Rights to enter the house else FIR will be registered for Tresspassing. Now my Brother is enjoying all the Rental Income staying with my Parents and my money is not been returned and allowed to stay in the house.Kindly advise what can be done further.