After moving into a new home I had a terrible experience with British Gas. I was put on a temporary extremely expensive tariff which I wasn't informed of until being in the property for over 3 weeks. I then received bills requesting I pay for the previous owners gas & electricity usage which they hadn't yet paid. I phoned BG and told them this was not ok and asked them to send amended final bills only for my usage. They agreed it was an error and would send amended bills. The bills which arrived were still incorrect, this time they had falsely increased meter readinging way beyond when I had switched to a new energy supplier. I have a BG smart meter so it was disgraceful they made up an estimated reading instead of using the smart meter they have access to. I phoned again requesting up to date correct & final bills. This time the electric bill was correct but wasn't a 'FINAL' bill... and the gas bill was even higher than before... At this stage they started threatening to send my details to a debt collection agency. I finally used their live chat and had to be very pushy. They agreed the electric bill should have been a 'final' bill and this was their error, and they agreed the threats were a mistake - yet continued to send them. Today I finally have written confirmation from them of the correct, final bill amounts which I will pay. avoid this con-men. Note, the written confirmation also included some other customers details and case information by their error - stupid british gas! #GPDRbreach