Does anyone know whether utility cos. can bill based on an estimate? Mine - EDF - is charging me a fortune for gas consumption for last summer. The initial reading for that period is based on an estimate; the final one is based on my reading. The final total is completely out of whack with previous summers bills. The initial reading is an estimate b/c EDF used to be Virgin and me thinks there has been a cock-up. EDF are being very inflexible. Any consumer rights/protection on this or will I have to pay?