Sony India — Within warranty period, no service received for my set sony xperia z3+ from teknoplaza, salt lake

Address:	Kolkata, West Bengal, 700059
Website:	TEKNOPLAZA, Salt lake

I purchased sony xperia z3+ from online retailer amazon invoice no:ka-blr[protected] dated 29th march 2016 having imei=[protected]
On 10th of october 2016, i noticed that the my xperia phone is not responding and touch screen not working.
On 11th october 2016 when i visited you repair center teknoplaza, salt lake i found the center is closed at 12:00 noon
On repeat visit on 12th oct, i was told
A) my touchscreen is broken
B) warranty void
C) tentative cost of repair is about rs.16000, inspection charge rs115, service charge rs. 575
On 13 october, i was told the cost of repair will be rs. 13124.74 plus inspection and service charges
I was highly disappointed looking at list of charges which includes all possible charges under roof including inspecting charge, service charge, display assembly, speaker, loudspeaker, relay module, adhesive charges for under warranty top end hand set.
I asked the center to return the phone immediately as i am in no mood to accept this. There comes the surprise!
I was told that they can only return my unrepaired phone on 17th oct 2016 after 5 working days and 120 hours as it is their normal practice.

We customer spend on the brand name... If brand name is a false concept then why we shall spend on brand name?. The same facilities are available in cheaper non-branded item.
Please give me justice.