1. umm you can contact customer care and they might ask you to install smart tutor and check your device.
2. install smart switch and try using software recovery( you will find ways on internet to do so!!!)
3.boot your mobile in download mode and perform a complete factory reset.
the above two options may or may not work. try it at your own risk. honestly, your situation is very tricky its really hard to help you out like this.
Dear Samsung Member,
Greetings from Samsung Customer Support!
Please visit this mentioned link to resolve your device heating issue: https://www.samsung.com/in/support/mobile-devices/why-the-device-heats-up-during-use/
To resolve your device battery drain issue please visit this link: https://www.samsung.com/in/support/mobile-devices/samsung-mobile-battery-drain-issue/
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
Thank you for writing to Samsung.
Samsung Customer Support
see the snapshot, i am not alone who is facing problem in device,
and if you can not provide proper solution please dont answer