If you attend the counseling of KIITEE,then they will ask you to submit a certain amount of approx 80–85k (in our time it was 75k) in which counseling fee is 10k and the rest is for laptop and books
Now if you don’t want to take admission you just have to send a mail to the helpdesk of the university and they will send you the detailed procedure of refunding, except the counselling fee of 10k you will get your whole amount refunded.
Usually this all process take a month and sometimes even more.