Indian Railways — diversion of train route without prior notice

Address:

H.no-30, lallan Singh nagar, Sarsawan, arjunganj, Lucknow, Uttar Pradesh, 226002

Train number 12876 neelanchal expresss has been booked for 19 april 2019 under pnr number [protected] is diverted from kanpur and not going to to lucknow. The concern is that diversion of route is not imformed prior notice. It caused trouble my family members. What's wrong with railway facility. Please look into the matter and resolve the issue as soon as possible.