Sony — I wanted to change mobile with another model

Address:

Agra, Uttar Pradesh

Respected sir, I have purchased sony XperiaT3I(MEI Number-[protected]) (model -D5102, Black) from Suryansh communication sanjay place (address-block no-41/2G, sanjay place agra) On 5th june 2015. I faced many problems while using my phone like -heating problem, while my phone is unplugged then also charging sign is shown above with improper and fluctuations of battery usage, in camera -time burst effect backs itself, pattern lock not working, on first time using of Google Chrome and play store message occurs-" unfortunately Google Chrome/play store has stopped working"respectively, Back key is not working while using whatsapp. I went to the shop from where I have purchased (mentionedabove) on 7th June (exactly after 2days of purchase) for complain but in response I got that I have to wait for 15 days unless an update of lollipop version occurs and I wasn't informed that I can replace my phone in 7 days, I have one year insurance... Also I went 5 to 6 times to authorized service centre near subhash park agra(ankur care centre), but they were unable to resolve my problem... I kindly request to intervene my problems by resolve it as soon as possible... Or I have to take a legal action against company..
Sony company give a replacement of my mobile but that mobile also with same problems9 imei number-[protected])
Email id-www.[protected]@Gmail.com
Contact me on -[protected], [protected]
Thankyou!