Jalexa
You have hit the nail on the head. Most problems result from customers not keeping on top of inaccurate estimated readings. Its a poor system but we all must realise this and dont rely on the suppliers readings. For the last 18 months I have taken readings every saturday morning logged them and sent them online to the supplier (yes sad I know). The point is i now know exactly what my consumption is which means when using comparison sites i receive accurate figures. Plus the bills are accurate and will not have the wool pulled over my eyes(hopefully). I have used Npower for many years and now Bgas and no major problems. The problem is the estimated bills are useless and cause a lot of nasty surprises when the customer receives a bill with an actual reading. I know its a bind but my advice is keep a log of your readings or at least check the bill and send in the correct reading. The same when moving in or out of property, dont rely on others, read them and write them down.
One problem I had was when I switched supplier. I was determined it would run smoothly. I phoned both the old and new suppliers before the switch date about the final/opening readings and each one told me the other was responsible for the final reads???????????????????? I sorted it but THIS IS WHAT WE ARE ALL UP AGAINST staff giving wrong advice.