There should be a zero stars option for these people. The rudest most unprofessional customer service agents I've ever had the misfortune to encounter. I only wish I'd had the forethought to record my conversation with their customer services and put it online for all to hear. Their emails are just as rude as their telephone staff. They deserve to go out of business. They are refusing to repay me my own money and are demanding more money even though I am in credit by over £800 and have arranged to switch suppliers. (due to their refusal to repay me my own money and the staggering rudeness of of their customer services. They do not offer smart meters. Their app is useless and they do not produce statements on time so you don't know where you are with them. Do not touch these people with a barge poll. You have been warned.