Sra sec for ident of eligible/ineligible slum dwellers

Sir,

i am residing with my family since 1963 (my mother,my wife and two kids)in a  chawl .the room was on my mother's name this chawl is on sra development,the developer is calling each member and paying a rent for one year.

now my mother has expired on 19th january 2014 last couple of month,

the developer is saying that i will not give you the rent,do you have any will which your mother has made.has she filled any nomination that the said room will be transfered to your name

when my mom was sick she told me that she has nominated me and all the signed documents are with the developers.

now the developer is refusing to show me any document and even the chawl commettie is not cooperating.

i have all the relevant document like Ration card which is on my name,Adhaar card ,election card.electricity bill which is on my name,birth certificate.

please Advice