[Resolved]  Motorola Solutions — moto x4, service centre issue

Address:

Dakshina Kannada, Karnataka, 575004

I have given my Moto X4 for fixing the battery issue, which wasn't charging, they said the motherboard was dead, so they took 1 week to order and replace it, when they were replacing the motherboard they have dumbly managed to damage the screen.
To order and fix the screen, they have taken almost another week. Once I got the phone, I found out that the loudspeaker is interacting with the screen and sending vibrations onto the screen. The screen also had a piece of plastic sticking out of it. This is how they have fixed a waterproof phone. Plastic was sticking out, and they are saying it is waterproof. Also in this process they have damaged the back glass of the phone, sterling blue paint is removed from two places.
They are claiming they didn't do it!
I want my phone fixed perfectly fine under warranty.