Show the name and phone of the customer without any mailshot.
SELECT customer_name ,  customer_phone FROM customers WHERE customer_id NOT IN (SELECT customer_id FROM mailshot_customers)
SELECT customer_name ,  customer_phone FROM customers WHERE customer_id NOT IN (SELECT customer_id FROM mailshot_customers)
[{'customer_name': 'Magdalena', 'customer_phone': '1-352-291-1721x265'}, {'customer_name': 'Leanna', 'customer_phone': '203-036-0511x96487'}, {'customer_name': 'Ruthie', 'customer_phone': '(840)754-4148x20545'}, {'customer_name': 'Shanel', 'customer_phone': '1-957-676-9414'}, {'customer_name': 'Kyle', 'customer_phone': '291-425-7193'}, {'customer_name': 'Mitchell', 'customer_phone': '698-327-5792'}]