OnePlus India — Hanging Continuously

Hey, I have OnePlus 9 5G( this is what the company named it, It is one of the worst mobile I ever had, It's not even 6 months that I bought this phone it is continuously hanging. everything is working in the background except the display something is there and I'm sure display is still there, It's the fault in Something else. This is a manufacturing defect piece which I have got.
We as a customer spends 50k for a non performing low standard phone. Thank God I'm aware about the scam this company is doing. They are fooling all of the customers.
They aren't even replying to the messages,
Super disappointed with this company.