Flipkart — Return of the product

Hi,

I have ordered an water prufier in Flipkart on 20th Jan 2023.I paid the amount in advance.Once the brand team came for installation, they have declared it was not working.

So i raised return request on 3rd Feb.Till today no called me for tech visit, but they are canceelling the return request in flipkart, Even after paying my money and also i am not able use the product after 10 days also.

is this the fair way to treat your customer with your policies, what will you give us the reply