What is the phone number of the customer who has filed the most recent complaint?
select t1.phone_number from customers as t1 join complaints as t2 on t1.customer_id = t2.customer_id order by t2.date_complaint_raised desc limit 1
The customer who filed the latest complaint uses which phone number?
select t1.phone_number from customers as t1 join complaints as t2 on t1.customer_id = t2.customer_id order by t2.date_complaint_raised desc limit 1
What is the address of the customer who filed the most recent complaint?
select t1.address_line_1, t1.address_line_2 from customers as t1 join complaints as t2 on t1.customer_id = t2.customer_id order by t2.date_complaint_raised desc limit 1