Amazon India — Seagate harddisk

Address:	641019
Website:	amazon.in

Product purchased not working. booked for return and refund.

no action taken by amazon

hello

Seagate harddisk purchased on dec 3 2016 isn't working. Return and refund was booked on the very next day but still pick up wasn't made. I have brought this problem to customer care's notice several times. people attend the call gives same positive reply without change in words. pls check call log of so that you can know how many times we have approached your customer care.product worth is Rs 4150. I cant lose my money.
selling a faulty product and not returning my money.this doesn't sound ethical. we have lost the trust on amazon and amazon prime products.

help me out. whom should I contact to resolve the issue?????