A typical ex-nationalised 'untouchable' company operating fraudulently. British Gas hoodwinked my restaurant staff in Nov 2018 to 'fix' the smart meter to work on MAXDEMAND tariff which means a minimum bill is issued irrespective of actual usage. Bills went from £111 to £1505 monthly which forced closure of this small restaurant. Knowledge of MAXDEMAND tariff did not come about until 2021. BG offered no such contract nor explanation nor willingness to resolve. If this was not true, I would be sued. British Gas are definitely NOT RECOMMENDED as business suppliers. For 3 years British Gas have refused to justify or correct (several complaints raised & Ombudsman refused to investigate claiming Smart Meters are enforced by law but there is no legislation for lack of mobile signal/defaulting to maximum usage bills) their [default/estimated] overcharged bills until the posting of online reviews. Now (10/21), overcharged by £20k I am forced to take BGB to court for £19k refund & loss of profit: unlikely to get more than refund so AVOID! Simply cannot do worse. Additionally, BG have unwarrantedly damaged my credit rating. Complaint ref.: 5023866128