How many orders did Antonia Poltun return?
order returned refers to status_value = 'Returned'
SELECT COUNT(*) FROM order_status AS T1 INNER JOIN order_history AS T2 ON T1.status_id = T2.status_id INNER JOIN cust_order AS T3 ON T3.order_id = T2.order_id INNER JOIN customer AS T4 ON T4.customer_id = T3.customer_id WHERE T1.status_value = 'Returned' AND T4.first_name = 'Antonia' AND T4.last_name = 'Poltun'