For claiming share certificate, bank deposits, insurance claim etc. you need to apply to the District Court, Bombay, at Kala Ghoda. It will cover everything like bills of electricity, phone bills, water cess, etc. you need engage a local lawyer. A will has to be filed in district Court for transfer of property to persons named in the will. This process is called probating of the will. After filing of the will, the Court will issue notices to all the family members and hear objections if any they have against the will. After that appoint an executor of the Court for execution of will who will transfer and register the property mentioned in the will in favor of beneficiaries of the will. Unless will is probated it is of no use. You have to file the original will in the court and give the names and addresses of all the legal heirs and persons interested. There is fixed fee for probate proceeding which not very high. But you have to bear the expenses of lawyer which vary from lawyer to lawyer. It will take 3 months for probating will.