I am a Norfolk Southern employee. Many employees are on call 24/7. This number is the crew caller who apparently has called the wrong number if they have called you. They call the train crews 2 hours before they have to report to work so the calls can come any time during the day or night. If I did my job as poorly as they do theirs I would be fired.
This one called at 12:08 AM on July 15 at my home in northern VA - a very long way from Atlanta. The caller ID said Norfolk Southern. The crew caller is way off.