Amazon India — Order not delivered after delivery date passed already

I have ordered kids t-shirt set of amount 699 rs.
Amazon india showd that product will be delivered on 25 may 2020
But still its 27 may 2020 not delivered the product
Also when i try to call customer care services they are not receiving calls also on chat they sending repeated reply.
On track products delivery it shows they have rescheduled delivery date on customer request but i did not requested anything about delivery date because there is no single communication happened between me and amazon india person.