Hey asspirant,

To get information for refund related policies I highly suggest you to contact to the officials or to the office of CSAB. They will help you to clear your doubts. Or email them your problem or just visit to the there official website to get more information about the refund-related policies.

The Contact deltails are:

Central Seat Allocation Board – 2019

• National Institute of Technology
• Tiruchirappalli – 620 015
• Tamil Nadu, India
• Contact No. :  +91 431 2504333, +91 431 2504334
• E-mail: csabhelpdesk@nitt.edu
• Timings:  09:00 AM to 08:00 PM (Monday to Saturday) , 10:00 AM to 06:00 PM (Sunday)

Hope that helps

all the best