“Wharton’s address was obviously known because the State mailed a summons to Wharton’s address in Georgia,” Judge Anthony N. Lawrence wrote in the appellate court’s opinion. “[But] because the State attempted service of process by certified mail but never received or filed a return receipt indicating Wharton had been served and never received or filed the envelope marked ‘refused,’ the State never completed service of process on Wharton as required in Rule 4(c)(5).”