One shocked house owner said: ‘I couldn’t understand it. My radiators started giving off heat. The TV became brightly coloured and started to emit a range of bewildering noises. It was almost as if someone had flicked a switch somewhere.’ A spokesman for British Gas Residential, assured the public: ‘…that normal service would resume – with good old fashioned doorstep intimidation, confidence tricks and our core value of scaring your Gran into handing over her credit card details’.