Amazon India — Costus igneus, insulin - plant

Address:	620006
Website:	amazon.in

I placed on order with amazon.in on 27th april 2017 - costus igneus, insulin - plant 2 no - order #[protected] thru "nursery live"
The plants never arrived and when i checked, the status shows delivered - but no one at my home or neighbours received it.
When i try to post a complaint on amazon portal, i get a reply mail, repeatedly saying that

"message not delivered
There was a problem delivering your message to [protected]@googlemail.com. See the technical details below, or try resending in a few minutes."

I consider that amazon is cheating a loyal customer with a double whammy - (A) by not delivering a material for which i paid in advance and (B) not allowing me to complain.

This is highly unethical and pathetic behaviour. Why amazon treats its indian customers differently?