Relations with my father is not good he want me and family out of sight but i am still paying loan installments on his property

There is one flat taken from the builder on construction link plan. It is on my father’s name. He has taken the loan from the SBI with me as a primary applicant because he is retire person and my sister as co-applicant. Now my father and sister is Co-applicant and myself as a primary applicant on loan as I am the only person with salary. My sister which is divorcee and living with us and I am the only son. Now I am having difficult relationship with my father, and sister. They are now no more interested in given any property or anything for which I am lawful eligible. They do not want any relationship with me either. All installment on Loan is payable by me only. They even do not want to give this house to me and even want to sell the same ASAP. As house is in his name, so I am not lawful eligible to get any amount or at least amount paid by me on it as flat is totally on the name of my father. I am afraid that even my father has made a WILL by eliminating me on any property he has. should i vacate this property or how can i get my money back from my father.