Awful customer experience. They have issued a final bill for an estimated read higher than the read I supplied when changing supplier. Their stance is that it is within tolerance so it will NOT be revised, even though it means I will be paying both old and new supplier for the same energy twice. They will not answer any questions, about incorrect, inaccurate bill, why is it an estimate when the actual read exists on their systems, why have you used the actual for my final gas bill which is correct. Stock answer is within tolerance, bill will not be revised of reissued, and payment due. Totally arrogant and rude, maybe because I'm an ex customer now. Avoid at all costs, unless you want a final estimated bill with fictitious consumption applied.