Amazon India — defective product received-reg.

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I have purchased a laptop adaptor from DN Enterprises,Shop No.5,1st Floor, Grant Road (E),Dongre Bldg,Samrao Vithal Marg,Lamington Road,Mumbai-400007, Ph:022 – 23864237 through e-commerce website of Amazon.in on 17/11/2018 they also attached Invoice wit, 500076

I have purchased a laptop adaptor from DN Enterprises, Shop No.5, 1st Floor, Grant Road (E), Dongre Bldg, Samrao Vithal Marg, Lamington Road, Mumbai-400007, Ph:022 – 23864237 through e-commerce website of Amazon.in on 17/11/2018 they also attached Invoice with one year warranty period.The Adaptor received from DN Enterprises, Shop No.5, 1st Floor, Grant Road (E), Dongre Bldg, Samrao Vithal Marg, Lamington Road, Mumbai-400007, Ph:022 – 23864237 through Amazon.in is defective and sent to service, I have received the defective Adaptor same without any service, from DN Enterprises, Shop No.5, 1st Floor, Grant Road (E), Dongre Bldg, Samrao Vithal Marg, Lamington Road, Mumbai-400007, Ph:022 – 23864237through Amazon.in.I have received the same defective product after sent to service.I have paid Courier charges Rs.80/- on 18/2/2019 through Professional couriers, vide AWB No.HYD69443351.Till today I have not yet received exchange/service / replacement from DN Enterprises, Shop No.5, 1st Floor, Grant Road (E), Dongre Bldg, Samrao Vithal Marg, Lamington Road, Mumbai-400007, Ph:022 – 23864237 or from Amazon.in. Every time they asking me to send the details once again, so many times I have sent my details, but not yet received any positive result from DN Enterprises, , Shop No.5, 1st Floor, Grant Road (E), Dongre Bldg, Samrao Vithal Marg, Lamington Road, Mumbai-400007, Ph:022 – 23864237, or from Amazon.in till today. Already 8 months passed. Remaining warranty period is only 4 months. They are reluctant to do anything. Every time they are sending irrelevant messages like, be patience. They want to drag this case till the warranty period expires. How long it is going on I don't know. They deliberately are doing this. I have vexed with DN Enterprises, , Shop No.5, 1st Floor, Grant Road (E), Dongre Bldg, Samrao Vithal Marg, Lamington Road, Mumbai-400007, Ph:022 – 23864237 and also Amazon.in. I don't want to pay further single paisa to DN Enterprises, Shop No.5, 1st Floor, Grant Road (E), Dongre Bldg, Samrao Vithal Marg, Lamington Road, Mumbai-400007, Ph:022 – 23864237 or to Amazon.in. I have lost
Rs.8, 00, 000/- from my consultancy services due to their irresponsibility. I don't have any muscle power, money power, and political power. Court also sent summons to Amazon.in, but there is no response till today. Is it coming under the court contempt case? If the warranty period expires, it is very huge loss to me. Please help me in this matter at the earliest. I am begging you to help me. Waiting for your early help.
Email id:[protected]@4dimpex.com