Bank not leaving possession

State Bank of India was on a premise that is half owned by me and half by my late Aunt. The Bank shifted to a new premise sometime in September 2016. The lease deed of the premise is a joint lease deed with my aunt. I don't have talking terms with my Aunt's family. The lease expired in 2013 and is due since then. The bank agreed to pay increased rent from 2013 sometime in 2015 end. The lease deed was not renewed because of some issues from my Aunt's family. Also the demise of my aunt in may 2016 delayed the process. The bank asked us to come together and take the possession. But since I am not at all in talking terms with my Aunt we are not able to go together. Have individually asked for possession and the due arrear and rent a number of times but the bank says it will pay arrear only when the lease deed is registered. On the other hand the bank has deducted TDS on the arrear amount in the year 2016 and have not paid the same to me. Also the bank is not giving me the possession till the deed is registered. What can I do?