CREATE TABLE table_name_62 (total VARCHAR(255), set_2 VARCHAR(255), set_4 VARCHAR(255), score VARCHAR(255))
What is the total of NA for set 4, a score of 3-0 and a 26-24 for set 2?
    
SQL: SELECT total FROM table_name_62 WHERE set_4 = "na" AND score = "3-0" AND set_2 = "26-24"