1, high-speed rail customer service hotline: you can consult through the high-speed rail customer service hotline. Every country or region's high-speed rail operating company has its own customer service hotline, and you can get the customer service number through official website or related high-speed rail service platforms.
2. High-speed rail official website: Many high-speed rail operating companies have official website, which generally provide necessary contact information and frequently asked questions. You can look up relevant regulations on official website, or look for options to provide online customer service for consultation.