Flipkart — Issue with LG 1 ton AC OD[protected]

Below are the order details:
Registered mail id: [protected]@gmail.com
Order id: OD[protected]

I bought this item on 17th April 2022 and delivered by flipkart on 18th April 2022

I have two complaints here

1st Issue. The price i bought is at 37990 and post discount i paid 36990 rupees. Now the product just delivered and not even installed. Within just 2 days the price changed to 35490 on flipkart. i.e as a customer am deprived of 2500 rupees in just 2 days.
When contacted flipkart customer care, they are denying any resolution for this. Don't you have any price drop or regulation policy at your end for large appliances even for 2 days post delivery & not installed. This is something as a consumer I feel deprived of right price. I am still serving return policy window and yet you state, you can only replace the product and cannot refund the amount, For these sort of cases where price drops overnight for large appliances post purchase there should be refund allowed to user or should provide difference amount

2nd Issue: While placing the order i have been shown that the product will be delivered by 18th April 2022 and installation shall be done before 24th April 2022
As soon as i place the order, the installation date changed to 27th April 2022 and I have no option to modify it prior to the mentioned date.
This is something a kind of false promise by flipkart and as a result of it as a buyer we are suffering .

I need clear resolution w.r.to above issues