Amazon India — non delivery of large packets. item returned without any consent of consumer

I have ordered "blaupunkt bt400 volcano 40 portable party bluetooth speaker with wireless karoke mic (Black)" with some other tiny items vide order #[protected] and order #[protected] on 10-aug-2019 worth rs.7423/- and discount of 10% applied by sbi card as per time term and got rs.742.30 discount. Total payment made rs.6680.20 in a single transaction (Prepaid).
I received all tiny items worth rs.1821.60 on/within time but the large item not delivered i. E. "blaupunkt bt400 volcano"

As per track package and sms this item was to be delivered on 16-aug-19. I come to know after telephonic conversation to customer care of amazon india on 17-aug-19 that my item is returned to seller. It is done without my consent. It clearly means,
"either item has not been dispatched by seller or courier has not taken extra burden to deliver this large package".
Same problem i faced before (Records may be seen in comparison of size of items) with my order dtd 21-dec-18 and i had to re-order but on same price.

In this order, after 10 days i got my refund. By this order i was going to get "blaupunkt bt400 volcano" at a cost of rs.4859.10 and now due to price increased or offered end, it costs worth rs.5999/-.
My family members ware very excited and waiting impatiently for this item.
I faced loss of money as well as mental stress too.