I would rate them 0 if I had the option. I have experienced a catalogue of errors since switching to them in May ‘23. There is no customer service and no process for dealing with or escalating complaints. Automated texts and e-mails are sent in isolation and there is no coordination of telephone calls and e-mails. I even involved the Energy Ombudsman but this was a waste of time as Octopus did not action any of the resolutions required. Complete shambles. I tried to communicate across all channels and many of my queries are still outstanding. Do not believe their advertising and keep well away.