OceanaGold Corp. Customer Service Phone Numbers Customer service: +61 3 9656 5300   OceanaGold Corp. Headquarters Info, Email, Phone number, Website and live chat Information OceanaGold Corporation (OceanaGold) is a multinational, mid-tier gold mining company with significant global operating, development and exploration experience. OceanaGold’s operating assets are located in the Philippines, New Zealand and the United States