Flipkart — Regarding non-delivery of product on time and levy of charges for its cancellation.

Dear, Sir/Ma'am
An order for a product was placed on 13 April 2022. The expected date of delivery of which has been kept as 17 April 2022. But the delivery has not happened on April 17th, but at 07:02 I receive an email from flipkart saying that the product will be delivered on April 19th 22nd. Then I canceled this product but why was the cancellation fee 75 ₹ charged to me.