I was with Octopus for a few years, then closed my account when I moved. In spite of paying direct debit, they charged me as if I were not, and only repaid me after I disputed my final bill. Fast-forward 15 months and I have received a message from a debt-collection agency saying I owe over £800 in unpaid energy bills. Someone new moved into my old flat and didn't tell Octopus, so they just decided to put the account back in my name without telling me. I have spent the past three weeks trying to sort this out as it's on me to prove I no longer live there, in spite of doing all the right things by closing my account. Stressful and a complete waste of my time.