Smart meter installed in March 2022. Started getting emails that my bills had been wrong since then until December 2023. Received several messages all showing different figures with varying amounts being taken from my account. Made a complaint and that started the worst customer service I have ever experienced . So many different excuses made each time I called . Escalated complaint and advised had been allocated an advanced complaints handler . Told would be kept informed of progress of investigation . That never happened. Each time I called my case was passed to another handler . Impossible to actually speak to any of these people . Even had a call handler tell me she was in the escalated complaints department only to admit an hour later she was not . Repeatedly asked for Jemma but was told she had not agreed to accept my call. Then advised smart meter was being replaced by text however nobody could tell me why or who had made the decision. After many weeks the excuse given was the smart meter was sending to many readings which meant these were ignored and estimated amounts were issued . Something which had taken 20 months notice . The daily changes to my account were constantly resulting in money being taken out my account . Still do not know a reason for the errors. Have now changed suppliers