Xiaomi India — Mi 4i service

Address:	New Delhi, Delhi, 110085
Website:	mi.com

I have submitted my mi 4i in mi service center, rohini on 23 may 2016
Motherboard of the phine is to be replaced as it is lagging apllications and affecting hardware of phone like speakers.
Phone is still in warrenty and they promised to return the phone after repairing within 25 days
Today it is more than 1.5 months.
I have registered my complaint on mi hotline and complaint no is[protected]
Hence i still have no response from any of their representative.