functions.php

add_action( 'wc_custom_thankyou_failed', 'wc_custom_thankyou_failed', 10 );
function wc_custom_thankyou_failed( $order ) {
	wc_get_template( 'custom-thankyou/failed.php', array( 'order' => $order ) );
}

add_action( 'wc_custom_thankyou_successful', 'wc_custom_thankyou_header', 10 );
function wc_custom_thankyou_header( $order ) {
	wc_get_template( 'custom-thankyou/header.php', array( 'order' => $order ) );
}

add_action( 'wc_custom_thankyou_successful', 'wc_custom_thankyou_table', 20 );
function wc_custom_thankyou_table( $order ) {
	wc_get_template( 'custom-thankyou/table.php', array( 'order' => $order ) );
}

add_action( 'wc_custom_thankyou_successful', 'wc_custom_thankyou_customer_details', 30 );
function wc_custom_thankyou_customer_details( $order ) {
	wc_get_template( 'custom-thankyou/customer-details.php', array( 'order' => $order ) );
}