BRUSSELS - A Belgian store owner foiled an armed robbery on Saturday by telling the would-be thieves to return later when there would be more money in the till.The gang duly complied -- only to be arrested by waiting police officers, broadcaster RTL reported on Tuesday. 'I told them they'd be better off robbing me at half past six,' Charleroi e-cigarette seller Didier told the channel. 'I could see I wasn't dealing with geniuses.'