Fms bhu query

So I have pi for IIMA FABM on 16th March in Kolkata and IIT Dhanbad MBA on 23rd March in Kolkata as well and got mail for PI at FMS BHU on 19th March at Banaras. I will have to pay 2000 rupees for GDPI registration and idk how would I go from Kolkata to Banaras as none of the trains are available anymore(sab waiting chal raha) . So I was thinking of skipping the interview. Is it the right thing to do? How is FMS BHU? I have 88.9 percentile. Am I doing the right thing? Please shed some light. Thank you