Treasure Haul Online/flipkart Seller — Defective mobile

Website: Flipkart

I ordered a phone from Flipkart motog31 but when ever I charge it it becomes heated nd I think I is too hot that it can blast also I called the customer care they said we can't refund it we can only exchange it that too if techician aprove it but why I can't get refund the phone fingerprint sensor doesn't work nd sometime screen flickers also I researched about this on internet nd many people faced this issue nd the seller is same (treasure haul online) nd this seller is not refunding their money I am a student who passed class 12 nd bought a new phone with her savings for study this is worth my father 3 month salery he is a factory worker even after saving every penny we get defective product + they don't refund the money I am literally so depressed my exams are going nd still I am here how are we supposed shop online if are hard earned money is being used like this have some conscience we people suffer because of big companies like these