Flipkart - Issue with Flipkart regarding complaint on mobile refund

I got this mobile Honor *N on **th May ****. (Order ID - OD******************). I've been trying to return my phone the next day I got this phone. It's given me a tremendous headache with so many issues. On the first day when I entered my sim, I wasn't able to call, text or receive any calls from my Airtel sim. I used the same sim on another mobile and it wasn't having any issue. Contacted the Airtel customer care (May **) they had no network problem as well. Contacted Flipkart they told me about troubleshooting after a lot of safe mode test, reboots, reset and factory reset I was able to fix that issue but not completely I'm still not able to send SMS. But I ignored that problem. Next day I came across another issue i.e. Power consumption even while charging when I was doing excel work the battery was draining. Again contacted Flipkart (May **th) done all the troubleshooting safe mode, uninstalling apps (if there was any power consumption app), again did reset, factory reset still not solved. Then I'd a technician visit (May **th) and afterwards, a wrong report was submitted. Side by side I got a message that your phone has been picked up and the refund has been done, which wasn't true at all. And then I again contacted the Flipkart for the complaint of the technician and another technician came by (** May). He checked the phone and in front of me he wrote in the report "Power consumption problem, Overheating, and power draining quickly". And that action will be taken by **th May. Today (**th May) I'm getting a call from Flipkart that thanks for your valuable time and apologise for the problems you've faced, we're glad we could help you. I said that my problem isn't solved then she said that the technician reported that the problem was solved.
It's been like a week or so I'm just tired of contacting Flipkart, again and again, every day and all I'm getting is that "Your complaint has been forwarded to the technician or some other person". I'm just so done with Flipkart and the service. I just want this mobile to be gone and get my money back. I saved **,*** for past *-* years and I'm not wasting that money on such a problematic phone.