american express platinum customer service number
American Express 10 Digit toll free customer service number : 1-800-528-5200. American Express Platinum Travel toll free customer service number : +1-800-801-6564, 1-800-525-3355. American Express Green Card toll free customer service number : 1-800-528-4800, 1-866-207-7970, 1-800-243-3888. American Express Back Card Australia toll free customer service number : 1300 363 614.