You need to go to CUSAT with the following documents:
1.Admit card in original
2.Fee receipt in original
3.Copy of the front page of the passbook (passbook of the account to which you wish to transfer your money)
4.Cancelled check leaf of the account
As the classes have started today when you cancel now only the tuition fee will be refunded. ie, 35000 will be refunded to you.