Amazon India — Order cancellation and refund

On 15 January I placed an order on amazon and its delivery date was 21 January but the order did not receive after that delivery date automatic changed by amazon to 30 January when i tried to cancel the order they did not allow me to cancel order unit delivery date not passed so i did wait on 30 January but again they changed delivery date 10 Feb and again same reply that you can not cancel order unit 10 Feb after that 10 Feb also passed and again they changed delivery date 14 Feb but today 14 Feb also passed but not allowing to me to cancel the order and they are given a new date for delivery 24 Feb and told that wait upto 24 Feb.

For one month my money was used by amazon.
Order No:[protected]