In September, I changed supplier and joined Octopus. EDF took a final payment from my account (for five days' usage) which was far too high. EDF said they would have to contact Octopus and would make a refund as soon as Octopus had responded. The latter issued a revised bill on 26 October but I have still not had a refund. Last week, after prompting, EDF issued a revised bill and acknowledged that I am owed over £150. I am still waiting for a refund. This has caused a particular cashflow problem as I have just had to pay for an emergency repair to my stairlift, or be stranded downstairs. On a previous occasion, it took them four goes to issue a correct bill, even though based on actual readings. Appalling company.