Citibank — Company is asking to pay extra 30000 to close the EMI

I ordered a Laptop through Amazon using EMI option with CITI Bank Credit card and paid 32506.4 rs but Amazon did not delivered the product and refunded the amount 32506.4 rs back to my CITI Bank account. And as per Amazon the EMI should be auto closed in this case but CITI bank is not closing the EMI and asking me to pay 30000 rs extra to force close the EMI. I am unable to understand why they are asking me to pay extra 30000 to close the EMI whereas the amount which was deducted from CITI Bank account has been already refunded back.