Flipkart FireDrops is a scam?

I got access to FireDrops a few months ago and recently I decided to give the 'Reward Store' a try.

1. I bought a '₹1000 off Select Atomberg Fans' coupon and paid ₹ 140 for the same. It hasn't been credited to me i.e. the coupon is not available in the 'Rewards' page in my account in FireDrops. 

2. I bought a '₹500 off any POCO phone' coupon for ₹100 from the Reward Store. The coupon was credited to my account but on tapping the coupon the name changes to '₹500 off select POCO phone' which is not what I had bought. Secondly, I have gone through all the POCO phone models available on Flipkart including phones listed as 'upcoming' and 'currently unavailable' and the coupon is applied to none of the POCO phones.

Requested help from the Help and Support section inside FireDrops and it has been 7 days and there is no response at all. I also tried reaching out to Flipkart customer care via call and they have no idea about FireDrops. They mostly act as if they are hearing the name for the very first time. I agree that not many people know about FireDrops but at least the customer care executives shouldn't be like "What drops? sir?" when you mention "FireDrops" to them. Anyone else facing this issue? Or anyone got any successful buy using a paid coupon from Rewards Store?