I switched to British gas from Npower as BG were offering smart meter and a better deal. I was with Npower for 4 years and the final year I was with them my bill was £1600 for the year (gas and electricity). I was working from home so I expected it to be high. When I changed to British Gas, I had stopped working from home and was rarely at home. My bill for the year was estimated around £1400 (based on previous usage from Npower). I was really surprised that each quarter my DD was increasing! I couldn't understand this as the smart meter had stopped working and was not giving any type of reading out. It was not possible to obtain a reading from the electricity box. When I received my final bill, for the whole year it was £2400!!! I worked out the wattage that BG had sent me and it seemed way higher than any year I have lived at this address! In fact it was almost double one of the years. I called customer services who agreed it was odd and but could not tell me if it was an estimate or where these figures had come from...I was passed through to various departments and back again because no one could help (or could not be bothered) then eventually i got cut off! I called again and again and eventually I gave up! I am with a different power company noe and my usage is no where near it was with British Gas! My bills are lower than ever! The smart meter broke and BG deny that it was broken when I had photo evidence to show it was broken. They are a company I will never ever use again! Customer service weren't helpful at all.