Flipkart — Replacement issues as technician visit is delayed

Address:

No.74, Balandar Nagar, Mathur, Pudukkottai (62251)

I bought APC Back-UPS BX1100C-IN UPS for RS.7008, i wanted a replacement as the product was severely damaged and the product wasn't working properly, the customer service called me unnecessarily for almost 4 times a day for confirmation putting me through all that whilst i have to take care of my own life it was very overwhelming and i was regretting trusting Flipkart, worse thing the 8th January 2023, Sunday, the technician who supposed to visit hasn't shown up and the customer service seems unusually quiet about it, today I'm thinking whether to try further about the issue or to file a complaint on change.org about the problems I've faced since there seems to be a lot of people who went through with these things, i should have never trusted a online platform to buy something that is necessary on time. I want my replacement if not the refund, without either I'm never going to give up. I hope i get the help i need instead of random calls.