1. Please learn to be brief and just factual while reporting legal matters,
2. Lodge a police complaint against the said person who is attempting to demolish the staircase illegally,
3. File a declaratory suit praying for declaration that the said staircase belongs to your father,
4.Simultaneously, file an application under Order 39 Rule 1 & 2 praying for an injunction upon the said advocate restraining him from dealing with the staircase till he disposal of the declaratory suit filed by you,
5. Engage a lawyer having expertise in this field,
6. Be bold. You are required to raise to the occasion and act fittingly when the situation so demands.