Motorola Mobility — Motorola g52 phone

I ordered a motorola phone g52 from flipkart.
And it's the worst phone I have ever bought .
The microphone of the phone doesn't work well makes the call pathetic and the caller isn't able to hear my voice. You have to speak really loud or too close to the speaker so the other person can hear you.
Also, the back camera is too bad. I haven't seen such a poor-quality camera for a very long time

And now I am stuck.
Flipkart is a rubbish website
It doesn't allow the customer to put a refund option for such worst products, all you can do is replace and that's a hectic procedure in itself plus there's no guarantee that the replacement order would work fine or not.
I tried calling Flipkart and Motorola company several times but most of the time there is no response and the other time the issue couldn't be fixed.
I am pissed
My money has got wasted
I want a refund!