Reebok India — defective product and fretting of reebok tracksuit purchased from flipkart under the invoice no:-invoice number # faaabw[protected]

Address:

Kolkata, West Bengal, 700064

I purchased a tracksuit under invoice no. Invoice number # faaabw[protected] dated 07/12/2017 of rs.1815/-. After one wash the condition of tracksuit is completely bad, colour got discoloured and trouser stated fretting which looks bad (As if very old). I tried to contact reebok india and flipkart for its replacement but non is taking any action on its disposal. Flipkart and reebok are reputed branch but supply such things is not viewed for good business. I request to refund/return the above product. Please advice what to do?