Xiaomi India — MI4W not yet repaired after giving to the service centre

Address:	Bhopal, Madhya Pradesh, 462024
Website:	Mi.com

My mi4 went dead after 2 months so I gave it to the service center guys and it had been 2 months after reached them for the info for my phone and they said it has not been dealt with yet as there are no parts provided from the company itself to deal the problem and told me to check back later or they will soon remind me . Its been one month from then and no reminder from their side has popped. In total it has been 3 months and yet there is no response from their side. But seriously 3 months is way more than required to fix the device .
I seriously want my device fixed ASAP or else I want my whole money back.
Jobsheet no. of customer copy - JS[protected]
Also I've attached it.