Xiaomi India — Replacement of device

Address:	Bangalore, Karnataka, 500081
Website:	www.mi.com/in

I purchased redmi note prime 16g white on 26th july 2016 & its a defective piece output speakers are not working so i filed a complaint to mi customer to replace my device on 8th aug. They responded back on 11th aug and scheduled a pickup on 13th aug. From then i don't have any status of my old product and the status of my replacement process. I repeatedly calling the mi customer care but they also have no idea about the status. I don't know what to do. I am really tired of asking them about the status of my old device and replacement process.
My incident id :[protected]
Order id: [protected]