public function prepare_items() {
		$current_page = absint( $this->get_pagenum() );
		$per_page     = 20;

		/**
		 * Init column headers.
		 */
		$this->_column_headers = array( $this->get_columns(), array(), $this->get_sortable_columns() );

		add_action( 'pre_user_query', array( $this, 'order_by_last_name' ) );

		/**
		 * Get users.
		 */
		$admin_users = new WP_User_Query(
			array(
				'role'   => 'administrator',
				'fields' => 'ID',
			)
		);

		$manager_users = new WP_User_Query(
			array(
				'role'   => 'shop_manager',
				'fields' => 'ID',
			)
		);

		$query = new WP_User_Query(
			apply_filters(
				'woocommerce_admin_report_customer_list_user_query_args',
				array(
					'exclude' => array_merge( $admin_users->get_results(), $manager_users->get_results() ),
					'number'  => $per_page,
					'offset'  => ( $current_page - 1 ) * $per_page,
				)
			)
		);

		$this->items = $query->get_results();

		remove_action( 'pre_user_query', array( $this, 'order_by_last_name' ) );

		/**
		 * Pagination.
		 */
		$this->set_pagination_args(
			array(
				'total_items' => $query->total_users,
				'per_page'    => $per_page,
				'total_pages' => ceil( $query->total_users / $per_page ),
			)
		);
	}