Xiaomi India — Mi note 4G faulty hardware and poor services

Address:

Gurgaon, Haryana

Hi, I purchased Mi note 4g mobile from flipkart on 02-Jul-2015 it's IMEI number is [protected]. After using some days I found the hanging issue in it's camera. The camera was hanging when the video recording done for continuous 1 minutes.I complain about it to flipkart and asked them to return the device but they suggested me to upgrade the software to latest version and then check if the problem persist then check with Mi service centre. After that I upgraded the MIUI FROM V4 to 6.6.1, the camera issue resolved after upgrade.After around two week, the phone stop charging I went to following service center:Sec-14Parswanath Acardia, GurgaonThey checked the device and said to leave the device since device had some hardware issue. They took device on 14-Aug-2015 the service number is JS[protected]. They return the device on 27-Aug-2015 and said that the issue is resolved. I checked the mobile was successfully charging.After a day I need to take copy of some document and so I tried to take picture but unfortunately the picture taken by the mobile is getting blurred. I upgraded the software but it did not solve the issue.I had taken the pics of documents before giving mobile to service centre, before service the picture quality was good. I am sure now that it is not an issue of software, it seems to me that at service centre they have changed the camera withou any issue and without telling me.I request you through this channel to kindly let me know what should I do. I know that if I go to service centre they will take my phone and again take 15-20 days to solve the issue and may introduce some new issue.I have not purchased this mobile to always put at service centre.I simply want to exchange this faulty device with other non-faulty device which should not have basis functional issue.I am attaching here the invoice, pics taken before service centre and after service.I request you to kindly take appropriate action against the service centre and advice me what should I do.Regards, Murlidhar