use northwind
select distinct a.CompanyName, a.Phone from customers as a
except
	select distinct a.CompanyName, a.Phone
	from customers as a
	inner join orders b on b.customerID = a.customerID
	inner join [order details] c on b.orderid = c.orderid
	inner join products d on c.productid = d.productid
	inner join categories e on e.categoryID = d.CategoryID
	where CategoryName = 'Confections'