Flipkart later service providing bank is the one can help you with, but i have no idea how to go with these paylater services unlike cc, they must have some fraudulent measures at place similar to chargeback. Stress them much with your fir.
And ask flipkart people to unblock your account with access to your email/ phone only if they ain’t help you with any proper help. Try approaching with police fir/ note from police to get the details out from Flipkart (need to work that out with police guys). Then they should help.
As @getready said above, they can block the IMEI (if the culprits have not done advance level rooting to that device yet) and these people can only try to sell in grey market only. So high chances of getting caught and getting back the refund, albeit everyone works timely.. and we know how it works s in our country.
Such a big trouble for a little carelessness, maybe.
Flipkart helped with invoices. Said they cant help with IMEI number or delivery guy details.
I am baffled by this fraudster, like did he think he’ll simply get away with this and not be pursued.
Good thing is Seller, buyer and my friend all are in Delhi only.