Samsung — Samsung S20 fe overheating issue and not get right response

I purchased this mobile on 20 march 2021, but this phone is very much heating from start. I visited service center to resolve my issue, they update software but after that issue was rising and now phone heated up to 50 degrees .Then I complaint on twitter, they called me and then I took my phone at service center for heating test and my phone was failed in heating test even their worst guidelines. According to samsung in S20, S21 series if you use camera continuously for 10 minutes with every other application off and in flight mode, then increase of 15 degrees is normal situation. How is that possible temperature rise from 35 degrees to 50 degrees is normal? My mobile temperature rise from 30 to 48.5 degrees, mobile failed in heating test. It means phone form box is defective piece and I want replacement for my mobile. And they don't listen and every time says wait for 2 days . My phone is submitted at service center and today 8 days gone and I don't get any response. My all work stopped due to their service . I get in touch with urvashi manthaliya from samsung and did not get any right response, only I listen wait for 2 days.