Boat — After 3 months not giving my money back

Address:

'Krushna krupa' amreli

I have ordered boat rockerz 335 red smart buds on Boat website but I received defective product at that time I replace it and received replacement product but still same problem face in replacement product then costmer agent told me to claim warranty but I was not used product even ones time but I claim warranty because I have not other option then agent say product are out of stock and give me upgraded product but I am not agree with upgraded product and I say to give my money back still 2 months agent say refund is not in our policy then give me slab of policy and give me 80%refund but I have not used product why can I accept 80%refund