EON Next owe me £1,039.61 and It is clearly written on their latest monthly bill. Now they issued me the final bill when I closed my account and the amount was tremendously reduced to £484.44. They manipulated and amended some estimate meter readings for the last few years and put more usage in the months with higher rates as some months charged higher rates than the others. I compared my monthly bills and the final bill 's estimate meter readings month by month, some of the estimate meter readings were amended to their own benefit. I don't even know it is legal to do so. I have wasted a lot of time complaining to them and they just kept on making phone calls and sending me emails and insisted that they were correct. It really caused me a lot of stress and made me ill.