Table schema:
CREATE TABLE table_name_62 (total VARCHAR, set_2 VARCHAR, set_4 VARCHAR, score VARCHAR)

Question: 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"