[Resolved]  Askmebazaar — Defective power bank sold

I have purchase a Powerbank from askmebazaar the product is defective and not working I purchase on 1st of august 2015 and it is not working from 5th august I called customer care they told me that if the product is defective than you need to contact within 48 hours after that it will not gone to be repair or exchange, , , , , , , , , , , , , , , , , I want refund of my amount or I want exchange of product... Company name of product is : "AMBRANE" I have warranty card. Number : P1000Star115F0016168. Contact number of company(helpline :[protected]