I wouldn't even give 1 star! Switched to BG as supplier of last resort and have spent the last 8 months trying to get them to send us a bill. Advised by letter all in hand and no reading needed. Provided readings via live chat and on phone but not recorded. Took months to get set up then they just didn't take the DD and the meter reading reminder stopped. After 3 complaints, this was 'resolved'. Then they recalculated the entire billing from inception and told me we're in huge debit. Another complaint resulted in another recalculation leaving us in credit. Just had another bill that has back calculated again and now even more in debt!! 5th complaint just submitted. Every person I speak to tells me it's sorted and then 2 weeks later, they screw it up again. USELESS!!