You can claim easmentary right of necessity as there is no other access to your land
2) issue legal notice to brothers
Section 13 of the Indian Easements Act deals with easement of necessity An easement of necessity means an easement without which the property cannot be used at all. Mere convenience is not the test of an easement of necessity. It can be claimed only when there is absolute necessity for it, i.e. when the property cannot be used at all without the easement and not merely where it is necessary for its reasonable, or more convenient enjoyment. A man cannot acquire a right of way as an easement of necessity, if he has any other means of access to his land however more inconvenient it may be than be passing over his neighbours.
4) under section 35 of easement act you can obtain permanent injunction restraining your neighbour from obstructing your right of passage . pending hearing and final disposal of suit you can claim interim reliefs