Monthly Direct Debit discount is applied to billed usage before VAT and CCL associated costs. Not all energy products are eligible for the discount. American Express payments/products are not eligible for the 7% Monthly Direct Debit discount.
Calls to UK wide numbers are included in any inclusive call plan you may have. If you don’t have an inclusive call plan, calls are charged at a national rate. Please check with your service provider if you’re unsure.