My father and I decided to stay seperately,dividing the flat in two part both having seperate entrances in the year 1991.My brother stayed with my father in his part on the flat.We made an arbitration award for use and occupation in which my father committed to either splitting the share certificate of the flat or get additional share certificates for my portion of the flat and I commited to pay for the maintainence and repairs for my side of the flat.The society then refused to do split the share certificates.I stopped paying my maintainence to my father for my part of the flat. Both the parts of the flat have seperate electric meters and seperate ration cards.Can I and my father insist our housing society to issue additonal share certificate for my part of the flat.