In what may be the first reported case of robot rage, a customer at a mobile phone store in Japan has taken out his frustrations on android employee. Kiichi Ishikawa, from the city of Yokosuka. south-west of Tokyo, was allegedly drunk when he entered the SoftBank Corp shop on Sunday morning, Kyodo News reported. Local police were called when 60-year-old Ishikawa flew into a rage at the "attitude" of a human member of staff. Instead of attacking the object of his anger, however, Ishikawa allegedly kicked and damaged one of the company's Pepper humanoid robots. Described as a robot with a heart, SoftBank started selling the devices in June, primarily as human companions. The company says Pepper is able to recognise emotions in humans and is programmed to respond with its own emotions. Over time, the robot's developers claim, Pepper will establish its own personality. SoftBank is releasing 1,000 of the androids a month for a fee of HK$12,889 plus monthly service fees. The company is teaming up with the Alibaba Group in China to commence international sales in 2016. And while the android is designed to read emotions, the designers may need to programme future versions to predict outbursts of violence and equip them with a way of swiftly getting out of a tight situation. Ishikawa has admitted causing damage to the robot by kicking it. Police said the android appears to have suffered internal damage as it moves more slowly.