There was no real loss to me, but it was just an unpleasant experience. I am pretty sure that wouldn't happen if it was a refund/return.
You should consider writing to them cis@amazon.in, and if you know the name of customer associate that interacted you with, the better. You could also, alternatively, utilize Amazon's chat-based customer service, as you can actually "keep a record" of things they said and things you said. If what was promised isn't delivered, you can sure make enough noise by directing the query to cis@amazon.in, and/or jeff@ and amit@
There is one main ecommerce website, but it sells very little (if any) of the products itself - it's more like the marketplace of Amazon for independant sellers. The problem with that is that you really have no idea who you are buying something from, and if it looks too good to be true it probably is (there are lots of scams). Online payments aren't really trusted in the country so you are expected to pay cash on delivery, which if you are lucky will take less than a week.
The weird thing is that there are some decent physical shops, I bought a Dell monitor when I was there for ~€180 and everywhere else I looked (even abroad) had it for €200+. Most things were usually at least 20% more expensive than the EU, which is weird as they have no tax there :-)
I bought a Roomba while I was there from Amazon DE, even including international express delivery and import taxes it was about €150 cheaper than buying it locally.