Hong Kong’s consumer watchdog has called on businesses to improve services for elderly customers after receiving more than 9,200 complaints in the past three years, including a woman who spent HK$400,000 (US$51,294) on beauty treatments. The Consumer Council said on Thursday that improving services for seniors would help boost the spending potential of the “silver economy”, a priority for the city’s government amid a rapidly ageing population. “The council urges traders to review their sales...