A Hong Kong car owner has lost HK$500,000 (US$63,800) to scammers posing as petrol company staff who exploited surging fuel prices by offering bogus top-up deals for membership cards, police have said.The victim received unsolicited WhatsApp messages from fraudsters claiming to represent a fuel company, police said on their CyberDefender Facebook page on Wednesday.The scammers promised discounts through prepaid petrol cards and lured the victim into making immediate purchases.Global oil...