American Express c/o Sea Tours, 128/88-92, 8th Floor, Phrayathai Plaza, 128 Th Phyathai, Bangkok 10400 (tel 02/216 5759). Amex credit card- and travellers' cheque-holders can use the office (Mon-Fri 8.30am-5.30pm, Sat 8.30am-noon) as a poste restante; mail and faxes are only held for sixty days. They will also receive faxes for Amex customers on 02/216 5757. To report lost cards or cheques call 02/273 0044 (cards, office hours), 02/273 5296 (travellers' cheques, office hours), or 02/273 0022 (after hours).