Used to be fine, but since they switched to a new billing system they've been utterly chaotic - they also don't seem to be the slightest bit interested in trying to put things right. Queries to customer services are met with bland platitudes, but never address the actual issue raised. Over the last 18 months I've had no meaningful bills - lots of bits of paper, but all complete rubbish. A single bill will be for 3 weeks of electricity usage (a different) 9 weeks of gas usage, and 3 months of payments. Utterly impossible to tell where I stand with them because of their inability to produce meaningful bills. Back in September they suddenly announced they were increasing my monthly payments from £100 to £139 - no explanation or figures to back it up - just a bland statement. As far as I could tell from the rubbish which I was receiving, I was well in credit at the time. Their latest trick is to send me monthly bills which show my electricity usage and my overall payment, but skip gas usage entirely. It thus appears that I'm getting ludicrously into credit They combine total incompetence with an arrogance beyond belief. Avoid.