iBall — Iball tablet

I have given my iball tablet for repair at trichy authorised service center (Insperious solution) on 31/01/2020.
From that time on continuous follow up also they have not repaired it.
Upon checking with iball customer service they told that it will be repaired and will be taken up with senior but there is no response from them.
Kindly check the status and let me know soon otherwise i have to approach consumer forum as its been almost 6 months now.
Copy of invoice, customer receipt and chat screenshot is attached for your reference