Sony India — worst service sony xperia

Address:

Chennai, Tamil Nadu, 600100

I've had the worst experience with this so called irresponsible service center (Sony Center, Adyar, Opposite to Malar Hospital). The staffs especially an old guy doesn't even have manners on how to speak to customer, (I don't know his name). He was very rude on call, answering queries blatantly without checking up on status. I have given a sony xperia m4 aqua model for a minor fault (the back case was loose) servicing on 15 Feb (W[protected]. Initially they promised a 7 - 10 day return after servicing. They also promised on calling me to update the status of the complaint after 2 days and they never called, thus i called them back after 5 days, and no one picked up my call for like 50 times ( i have call log proof), . later the day i got connected to their executive and they promised a call back about the status and never been called back. My brother personally visited the store the next day and was told that it will be repaired within 15 days. On further calling to enquire the status, which will take multitude of times before attending my call, they started responding rudely on the phone especially that old guy (i have the call recorded) saying that 15 days excluding saturdays and sundays. My brother visited on 25 th Feb directly and they said they will update on 27th Feb. Its been 13 days now and now (Feb 27th) they are saying they will update the status of my phone after 17 days (March 3rd). Such a pathetic service. I don't even want the mobile to be serviced, just return my phone, good for nothing service center. Such a pathetic service center.
P.S. If any of you want any proof, please mail me at [protected]@gmail.com. so that i can send you a copy of it.
And my kindest advice is never to give anything for service here.