I didn't want to give any stars at all, Eon are just diabolical. After years of s*** during which time they inexplicably took my storage heaters off he Economy 7 tariff and charged me astronomical amounts at peak rate, I finally get a Smart meter and E7 reinstated. Now they want £285 a month to anticipate the winter bill, even though I'm currently only using £20 a week. They wouldn't even let me set up a Direct debit, then sent threatening emails telling me I'd refused to contact them. I'm fuming, worse, I'm so incandescent with rage I think my light bulb is going to blow. Ugh.