Over the last fortnight I have spoken on 5 separate occasions to Octopus Energy Customer Service Department, nobody has ever come back to me despite promising to do so. Nearly 12 months ago my Octopus account was heavily in Credit, Octopus suggested I paid £44.39 per month which I have done, my account is currently some £98 in debit. Yet they asked to take £353.75 on the 25th of this month, and on subsequent months indicating my bill would be over £4,000 for the next 12 months. How has the computer got to this ridiculous figure? I have not installed an Atomic Reactor in the garden. I told Octopus I had cancelled all payments by my bank, yet this has not expedited an answer to my query. In the midst of this confusion a separate email indicated my annual bill would be £122 less than this year. Does the right hand know what the left is doing? Something has gone seriously wrong with Octopus billing software, not helped by dreadful customer service.