"Households affected will have to make up the shortfall, estimated to be an average of £300, over the coming 12 months," Karen Darby, founder of a UK consumer site, commented.
"The vast majority of suppliers are pushing customers to pay by Direct Debit, with many offering additional discounts and offers for doing so. While any benefits are welcome, suppliers need to ensure that bills are accurate and up-to-date. Consumers also need to be vigilant and keep an eye on bills and bank statements for any unexpected additions or missed payments.
"Many suppliers have competitive online tariffs. We always advise customers with internet access to switch to an online tariff as they are usually the suppliers' cheapest deals and, because customers take their own readings, the bills are more accurate," she added.
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