They aint sent me a bill yet i just got a letter saying you owe us £ 1,439 and thats it

I have located the email correspondence between a member of their customer services team informing them of our occupation, the beginning date of our occupation and meter reading. Surely if i have this then it's their fault for not billing me !

Having spoken again to the gentleman from Eon, and explaining the situation and our stance that the biling code should apply and they can only charge us for 1 years worth of consumption, even though we notified them of our occupation and passed on our meter reading that they have no record of he stated that the billing code would not apply and therefore we would have to pay the full amount. Surely if we have provided them with our details and meter reading from posession it is an error on there part for sending the bills to the wrong addresse and it will apply ?

I did when i notified them i was talking over the tennancy of the property but im going to assume they will deny all knowledge and record of this.

We moved into a 2 bedroom flat in the January of 2008, we contact Eon and passed on the meter readings and our contact details to set up the bills and account. We had not received any bills or anything until our landlady has recently just got a bill for £1439 which she passed to ourselves, it would appear that the developer had no completed and passed the ownership forms to the energy company to inform them of the handover from themselves, thus they have been receiving bills for the properties on the site including ours and just returning them to the service provider. I have heard rumours from a rival service company that they can only charge me for a years worth of service thus would reduce the outstanding amount i owe, is this correct as they are charging me for consumption since December 2008 ? They are also basing my future usage on this bill also, so are allowing me to pay £70 against consumption and then £50 against future consumption, does this sound high bearing in mind its a 2 bedroom flat with electric storage heaters, fridge/freezer, washer/dryer, oven/hob and other general items ? Also in speaking to a rival service sales representative he informed me that the rest of the tennants in the 2 blocks (24 flats in total) had switched and were paying £30 a month tarrif and £50 at most. I havge Eon chasing me for payment etc and i would be grateful for any clarification that may help me understand and settle the matter to move forward, it would seem that for the possible output from the flat i am on completely the wrong tarrif and am being completly ripped off in terms of value for money.