Oh dear, hope they will sort this out quickly for you.
How will they know exactly what you have used Coolgran? We had a faulty meter years ago, we had no idea it was faulty, just that our bills were high, then the Electricity Board contacted us to say that the bill for the latest quarter was in thousands! When they changed the meter the old one was still whizzing round after being disconnected.
So we came to a compromise on what they estimated we had used but we still think we were diddled and didn't get refunded what we were owed. So they could be overcharging you for what was a genuine mistake.
Differing views of the older and younger generations.
"The Line" - what do people think?