Terrible customer service, still being charged 5 months after leaving. Offered free smart meter installation and arranged a date on 2 occasions. Rang a week ahead to make sure it was still taking place, to be told an engineer hadn't been assigned and it was too short notice to now assign one for that date. I asked why I hadn't been informed and they came up with some useless excuse that the system doesn't show the ones unallocated until that customer calls, so just as well I did! Got put through to the complaints team but naturally I was left on hold for ages and couldn't be bothered to continue!