Flipkart — Whirlpool top load fully automatic washing machine

Complain
We ordered a whirlpool 6kg top. Loaded fully automatic washing machine on 19 dec 2022 which delivered on 23 dec 2022.
Product was damaged and incomplete.
"Dent on it.
Detergent cup and Ratmash are missing.
That was a open box delivery so we were not ready to give OTP and accept this product.
Delivery boys said we can get 20% cashback if we accept this defective item and if we will not get 20% cashback then we can replace it.
Next day (24 dec2022) we got call from Flipkart that in 24 hours we will get 20% as a gift card in our Flipkart wallet.
We waited for 4 days there no gift card, . No mail, msgs or call or any kind o[censored]pdate from Flipkart.
Then we made a call to Flipkart (28dec 2022) they said they raised our complain plz wait for 24 hours only.
Again we waited for 24 hours and get no update.
Next day ( 29 dec 2022) again we made a call which took more than 2 hours and talked with 3 agents. Then we send a mail also to Flipkart for our complain again they ask for 24 hours.
we made call to whirlpool also but they said they can not do anything in this case we need to ralk only Flipkart.
we made a xall courier partner they said we raised your complain on the same day and now its on Flipkart.
Then we raised a replacement request (29 dec 2022).
We waited again and got no update.
Next day (30 dec 2022) we got call from customer care for confirmation and same day evening a technician also visited us. Technician said we will get a call from service centre at 8PM for confirmation then you will get replacement for sure.
Then yesterday (2 January 2023), we made call to whirlpool they give us service head number. We made call to service head he said he did his job now its on Flipkart so we can not do anything. We contacted to Flipkart they again said wait for 24 hours.
I massaged on Flipkart's Facebook page but get no Answer they dont even seen msgs.
Then yesterday (3 Jan 2023) again my issue marked as resolved but they didn't even provide me any solution.
I got call and msg that there is a technician appointment for uninstallation as my product going to replace but i want to know who made this replacement process. Why you guys providing me replacement, what if you guys provide me more useless product bcoz now you have wasted 10 days of replacement time limit. Now if i will get bad product you guys will do nothing like always. So on call of that technician i said i dont need uninstallation bcoz my product just packed yet as it is. But i want is just my 20% gift card in the compensation of damaged product.
Then in the evening i got a call from Flipkart consumer form that please send us a mail with the attachment of that mail in which we promise to give you 20% and i send that mail at the same time and then she said that in 24 hours you will get solution.
Today 4 jan 2023 again i got a call which hungup by itself then i got mail that i am not reachable so provide us another number again i send a mail for another number( i have send my other number many time before it) but i never get call on my other number too.
Till now There is no update from Flipkart and whirlpool and that technician and service center and courier service also via call, msgs or mail.
Now what should we do.
Just a little work which should done by Flipkart or seller in 24 hours has become headache of my family from 10 days. We need to a immediate action against then, they should be penalised, we need compensation.