Seat Leon MK3 2016 Handbrake Failure

So as the title suggests i have had my brand new 2016 seat leon MK3 for 8 weeks, i drove it onto the drive last week which is a moderate incline and applied the handbrake turned the engine off and got out of the car, as i went to shut the door the handbrake failed the car rolled back bent the door back crumpling the drivers door and pinning me against the door and fence leaving me with a broken finger and multiple bruises. the car then rolled back into the neighbours metal fence bending it all the way back.



So all in all that would be a new rear bumper, drivers door, new front wing and damage to the inside of the door where the hinges are.



Luckily i have cctv of the incident showing clearly me applying the handbrake, the moment i take my foot of the brake, turn the engine off and get out of the car, showing it held on the handbrake for over 30 seconds before failing and rolling away.



I have contacted seat UK had it into the dealer and they couldnt replicate a fault surprise surprise, they have taken a statement and it is going to the volkswagen vehicle safety board tomorrow so they can review it and the video evidence.



I just wanted to ask where do you think i stand on this matter? should i request a brand new car as i shouldn't expect repairs done to an 8 week old car due to a warranty based fault.