Jet Airways — not allow

Address:

Patna, Bihar

I travelled from PAT to CCU on 10 march by 9W-2683. I have connecting flight.I will reached in airport on 7:20pm n flight depart time is 7:50 pm. Then the manager says you are late he cannot allow me..l have paper in my university.he told me sorry you are late.me and my friend request him but he go inside runway and not come..he have 30 minute.