Boat — Related to refund

Address:

Vill-Balaganj near anamika wedding point p.o kalalghati kotdwar garhwal

Sir i ordered boat Rockerz 450 pro from Flipkart on 10th of June and got it on 13 th of June but when i am using it, it has flat sound and sound quality was poor. So sir i returned it and talked to Flipkart customer care but they said seller's policy is only for replacement, sir i want refund instead of replacement and my order's refund period is till 20th June. Still they are not giving my money back.