Samsung — Faulty Samsung Galaxy M31 - bought in October 2020

I had bought a Samsung Galaxy M31s (Mirage Black, 8GB RAM, 128GB Storage) from Amazon India on 19th October 2020.
It's been giving me problems from day 1 but it's reached a point now where I cannot use the device at all.

I had taken it to the service center yesterday to get it fixed, but they told me that "This is a faulty series all phones in this model have the same problem"
Looks like Samsung has produced a crappy piece of hardware with this model. There is a persistent problem with the display/digitizer.
I am unable to use the phone because of ghost touches and screen going on/off at the wrong time.

It's been a disappointing experience and I want my money back.