I don't have much positive to say about these guys. They supply both my electric and gas and for the first 6+ months they never sent me a bill / invoice to indicate my usage. The Direct Debits were being taken and added to my online account with them... the balance just grew and grew until I realised and called them. Apparently they were having issues with their IT and I - the consumer was unable to view my bills online, the website either timed out or 404 errored whenever I tried to check back at the calculations for my usage in the early months.
After calling Customer Services to resolve the problem, I was told I'd be called back once the staff were able to do a calculation of my usage. Needless to say this DID NOT HAPPEN and instead the credit balance I was accruing was almost entirely eaten up by a calculation to this day I have no idea was calculated. I still do not have the paperwork (pdf form) available online to be able to review my usage over that period. Another company that needs to get it's IT "house" in order.
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