Bent iPhone 7 plus

I recently brought my phone to the Apple Store for problems i've been having with my phone. They then discovered that I have a slight bend on the rear housing.

My initial problem was that when I turn it on the phone flashes a white screen with the apple logo. I've tried rebooting it through iTunes at times it will turn on and allow me to set up as a new phone but it doesn't stay on, and when it is on when i make or receive phone calls I can't be heard.

In addition the camera and voice recorder is not working, is there a possible solution to this? I'd rather not give in and bring it to Apple for repair. Any help is appreciated!