I moved to Octopus energy for their EV Octopus Go rates and I've been ripped off after Octopus changed my first-generation smart meter. I've been fighting with Octopus to re-bill the last two bills as they have over charged me £400 by billing me on the higher rate rather than on the lower rate saying there was a fault on my meter and couldn't get the half hour readings. Over 90% of my daily consumption was on the lower rate and historically they could see that but they didn't care and weren't interested even when I sent them the information, they wouldn't accept it. They are just another greedy corporate company. I'm now in the process of moving to another energy supplier, they don't deserve my business.