I would not give them a one star. My complaint dates back to 2022 with them and has been ongoing since I moved into our new home in 2022. We tried to change to BG for our supplier as I have been with them previously for years with no issues. I spoke to them several times over the phone between July - October 2022 to get my supplier and bill changed over to no avail. I then put in a formal complaint in October 2022 after proverbially banging my head against a brick wall with them. After months of back and throw getting new meters fitted, which did not communicate with the smart meter, then being told by the 2nd engineer that came I needed dual band meters as the distance between my gas meter and electric meter was too far apart. I waited for them to commission the meters. This never happened. I complained to the energy ombudsmen in January 2023 who ruled in my favour telling BG they must do everything possible to commission the meters. They argued back that they had been given until the end of Dec 2025 to sort all problems with customers out. I was left in limbo. I complained again to BG saying I still had no gas meter working so could not provide accurate meter readings as per their numerous emails asking. I finally got tired of waiting and paid for a log burner fire to be fitted end of March 2023, which we now use. A third engineer finally came out in June 2023 to commission meters but got a telephone call from her side saying to stop and leave and said someone else would come out. I waited and waited and finally phoned again. In September 2023 I put in another complaint to both BG and phoned the ombudsmen back to say they had still not fixed the issue. Ombudsmen said they could not do anything, as BG had until Dec 2025 to sort issues. This is ridiculous. I phoned again, complained I still could not provide accurate meter readings. After back and forth for months. An engineer came out in January 2024 told me my 3rd gas meter fitted in 2023 was faulty and would not give any readings, which is what I had been trying to tell them. He fitted new one. All of this time from 2022 to current I have ESTIMATED READINGS. Now they are saying I am £650 in debit to them, despite me not using any gas central heating since March 2023 after having log burner fire installed. Only gas I have used in this time is hot water for showers and a bit of cooking on gas hob, which does not add up to a deficit of £650. They have estimated my bill for over 18 months and will not accept my saying I have not used this much gas. This company is a joke and disgrace. I will keep fighting them.