Apple India — iphone not returned back from service

Address:	Chennai, Tamil Nadu, 600100
Website:	ample.co.in

I have submitted my iphone6s 32gb space gray handset to ample technologies, alwarpet, chennai in stock condition on 09th dec17, because the ringer switch was misfunctioning and the home button was not clicking properly.
The device was taken into custody and they promised to return the handset on16th dec17.
With no updates from the service center since then, i visited the center on16 to enquire about the same and they replied that the device is at the rc and it cant be repaired or replaced.
I agreed to that and asked them to return back me handset in the same condition that i have given them.
Now they are saying that my device is not charging or booting up. It has been almost a month and still no response from the service team yet.
The executive ms. Gomathi sekaran is the person attending this and has not provided any details of delivery.

The status of the device and the date of delivery is unclear.
Case id: 7492008
Ref no: imt1462870
Such a negligent act from apple team.
The device given at the stock condition has been damaged and the center is not disclosing the actual issue.