1. The customer service phone number may be wrong or has been changed. It is suggested to obtain the correct manual customer service phone number through other channels, such as finding contact information in official website of Taiyuan South Railway Station or social media.
2. The time to call the manual customer service phone may not be within the service time. Please try to call at Taiyuan South Railway Station during the manual customer service hours to get a better response.
3. There may be network connection problems or the line is busy. You can try to use another network connection or try dialing multiple times at different time periods.
If the above methods still can't solve the problem, it is suggested to go to the ticket office or waiting hall of Taiyuan South Railway Station for help, or seek online customer service support through official website of Taiyuan South Railway Station or social media platform.