How the feck did they manage to break the camera, it’s the housing they remove with the camera inside, so technically they don’t touch the actual camera to break it.
In my view Autoglass use oem screens, rather than genuine and this can cause no end of issues with ADAS and HUD’s.
After 3 attempts, I would demand it go to Volvo directly to be fixed but, Motability are a wet weekend and don’t care, which is shocking given they own the car. Perhaps email MB CEO and explain the situation and how you would like to move forward with it, to get it fixed and if necessary a electric loan car.