Maruti Insurance — incomplete work of my car by authorized service center - simran motors

Address:

410206

My car was submitted for service to simran motors, new panvel. I was given back car without front grill chrome replacement with reason that they don't have chrome parts available. The person gave me in writing that it will be replaced immediately as soon as it made available.
I was been told within a week it will be done. But its two months complete, i am still struggling to complete that and no any response from them.

Car= maruti celerio vxi green (O)
Date= 23/07/2018
Job card no=jc[protected]