an post doesnt appear to mind how often you make a payment, just so long as you bring a bill with a bar code on the bottom. just say the amount you want to pay. on the same subject, sort of, all my 4 previous bills have been estimated, first two were undershoots but with relatively good summer etc the next 2 were progressively getting out of kilter. so much so that reading the meter just now its only 2 units over the last bill ( august). i have now received another estimate and seperately a letter asking me to read the meter and phone them the units. but I think I will let it sit and have my freebie in December when it suits better. the real reason they are out of kilter is because I have installed more insulation and changed the home heating system to a pressurised one. definitely more efficient. the current estimate would probably be around about correct if the last two weren't so far over but I still find it odd that they are estimating 1100 odd units for this time of year and during the summer they estimated over 1200 on both the june and august bills. I am tempted to let them estimate the December one and run with the freebie in february when the 20% increase kicks in, but I dont suppose I will get away with that. they also mention in the letter how the 'reader' left a card for me to fill in, but I never received any.