It's regarding the 139 credibility.Today my friend is going to Hyderabad in 12805 Janmabhoomi from guntur,We are at remote location in Guntur and want to check the status of the train by 139. At 13.00hrs Executive told us train is running on time.We reached station in hurry at 13.30hrs. We came to know that train is late by 45 mts and would reach at 14.05.When we checked again at 139 from station,IVRS is telling it's on time and train is about to leave.