registry woes for the common man

Dear Sir, Plz. tell how to get aninvalid registry cancelled n the least possible time. Details of the case are as - Dear sir, My grandfather left a will(not registered) giving living rights to his wife, after her death the property had to be divided equally among his 2 children. However, my grandmother left a will (her name was municipal records) giving almost all the property to my aunt. After a death, a case filed by both parties(my dad and aunt) against eachother(regarding the partition. Aunt in the meanwhile sold land and registered the sale.