Very dishonest approach. They try to overcharge you no matter what. I changed my energy supplier from Solarplicity to Eon. Solarplicity didn't respect the formalities of the transition process, ignored the meter readings Eon sent to them, sent me a bill displaying a random figure that did not reflect reality, kept sending threatening messages to me, whilst gradually increasing the amount they wanted to overcharge me, without any explanation or rectified bill. They ignored all of my clarifications and e-mails and even their CEO publicly acknowledged online how bad their customer service is: https://solarplicity.com/to-our-customers-an-apology