Flipkart — Replacement delayed

Address:

Bhyravapatnam, Mandavalli Mandal, Krishna District, Andhra Pradesh.

Hello sir/ma'am i have bought recently a realme 4k smart tv on flipkart while big billion day sale for 24, 999/-
Purchased date; 09/10/2021
Delivered date; 12/10/2021
Installation completed by 13th evening
My unit has screen flickering and bleeding issues over the screen. So that, i have created a replacement request for my unit. Replacement requested date 19/10/2021. They said that the order will have a tech visit before approving your replacement product. I have waited until the date comes. Although, they didn't send a technician to visit. Tech visit date is 23/10/2021 still, which is shows your order is processing... If i had called the customer and tried to raise a complaint? In between the call the customer associates are disconnecting the calls. The waiting period is in between 8-20 minutes. However, they are simply disconnecting without giving any answer. Please kindly help me with my problem. I am waiting since 19/10/2021. Still, not solved the problem. Kindly help me with the refund or replacement as earlier as possible. Thank you.