I have been a British Gas customer for years and pay for boiler maintenance on a direct debit. In April I decided to have all my radiators replaced. The work was entirely satisfactory. When I received the bill I paid the full amount immediately by cheque. I received a letter saying money received. I also had verbal confirmation that money has been received. However, I keep getting bombarded with threatening letters saying I have not paid and the latest one says the bailiffs are calling on me in 7 days time. My bank confirm BG have received the funds. No one at BG can solve the issue and I fear a CCJ may be lodged against me even though I have paid. So, do not deal with British Gas, as although their engineers seem good, their backroom systems are inefficient.