Service Centers Contact Us Service Centers Symphony Communication has offices situated throughout the Thailand. Please click on one of the locations to contact a branch directly Region: All Bangkok and Vicinity Central Northern Northeast Eastern Western Southern Bangkok (Headquarter) Prachuap Khiri Khan Surat Thani Hat Yai Phuket Ayutthaya Maesot Tak Phitsanulok Chiang Mai Nong Khai Ubon Ratchathani 1 2