Amazon India — Cancellation request for non shipped order not getting accepted

I am unable to cancel below order since delivery timelines is 31 March 2022.
Your Amazon service portal is not helping me do cancellation, neither your Amazon CHAT service is helping me since it is only giving me options about delivered book but no options provided for Cancellation/pending delivery items.
Shipment is still not done for below order & hence I should be able to cancel the order, but I M not able to do thru Amazon site.

Amazon "Call me" option is also not working, I feel cheated for having trusted Amazon, I am very much disappointed for having 3 weeks delivery timeline and my order cancellation request not being accepted.

Request to cancel my below order immediately: