Upon the revocation of letters issued to a sole or last surviving personal representative or collector, the clerk of superior court shall appoint another personal representative or collector as provided by G.S. 28A-4-1 to act as successor to the sole or last surviving personal representative or collector. When two or more personal representatives or collectors have qualified, and the letters of one or more personal representatives or collectors are revoked, leaving in office one or more personal representatives or collectors, the appointment of successors shall not be required unless:
N.C. Gen. Stat. § 28A-9-6