Maruti Suzuki India — Complaint regarding slow response from Maruti

Ear Sir / Madam

Good day. I had booked a Wagon R ZXI= 1.2L ISS AGS/Met. Magma Grey on 27th Mar'22. On booking, I was sent a message stating that the tentative waiting period is 18-20 weeks. From the date of my booking, 20 weeks is already over but still, I have not any clue as to when my car will be available for delivery and not a clear commitment or response from the Dealer. Each time they say we are working but not a commitment on date.
I have also called your Maruti Suzuki Call centre and raised a complaint - Complaint reference number [protected] dated 16th Aug'22. But instead of attending the compaint Maruti has marked this complaint to the Dealer.

Very poor customer commitment and response from Maruti Suzuki.

I want to know the exact period by which my car will be available. Why there is a delay more than alrady very long wait period