A software engineer who had flown IndiGo from Patna to Bangalore picked up the wrong bag, and the person whose bag looked like his picked up the wrong one as well. Despite several attempts to contact the airline IndiGo wouldn’t give him contact information to reach out to the other passenger in order to swap luggage. And, despite its claims to the contrary, they never reached out to the other passenger either.
So the passenger took matters into their own hands.