E.ON changed my "plan" [see "title"] (January 18th 2013), presumably at the behest of "D.E.C.C."...another one of "Dave's" BIG-IDEAS!!! I now have no control over "on-line" account management...submitted "meter-readings" are refused. I have five circuits; "Day", "Night", "Boost", "Heatwise" and "Heatwise night". Now, because my "Heatwise..." consumption has fallen to zero (I do not use heating during these Summer-Months)...E.ON have decided that "your consumption is inconsistent with your usual useage"...consequently my on-line submitted readings are refused! They (E.ON) promptly invoiced me for a Bill, which is not due...I refused to pay; my payment history is impeccable...I pay quarterly "on demand"...THIS IS INTOLERABLE. E.ON extol the virtues of "on-line" account management but they are unable to "deliver"...this is clearly misrepresentation. I strongly urge every customer of E.ON to switch ! I have (had) a perfectly satisfactory [contract] with E.ON for thirteen years; this is a debacle. It is clear, from my correspondence with D.E.C.C. that this [situation] is due to "lobbying" by the "Big six"; of which E.ON are one. The introduction of "simplified tariffs" is simply a manifestation of this Government's failure to address [our] lack of an energy-strategy; we are now "paying-the-price" of failure! The only long-term solution is to invest in "Nuclear"; meanwhile, us consumers have to pay-the-price of [futile] "experiments" with WIND!!!