Parking damage

Hi, today I come back from the university, admire in passing my beautiful Vento and get half a heart attack as I see it: Someone stuck while parking on my peacefully parked car. Directly behind the back door it is pressed in about 1.5 cm wide, this metal fold in is of course torn. On the tire the track continues to pull, but does not look damaged. The rear bumpers got a bit over a hand wide scratched track, z Looks terrible, but the bumper is not deformed or broken, at least externally. The great relief: a note on the disc. They admit everything, have already informed the police and their insurance. I spoke to the insurance company on the tape, but that won’t be any more today. Now my questions: – Get a quote from the VW dealer or in a free workshop? Right to the car body builder? – The damage behind the door. r is so deep that it may have to be painted so that the rust protection is maintained properly. Does anyone have any experience with damage in the place? (In the wheel running directly under the protective strip) – Do I have deadlines to comply with? – What amount of damage is realistic? I want to give the opponent (Ford Galaxy btw) the opportunity to settle the damage itself instead of having the insurance rise. – Can one repair this plastic bumper at all? I would now find an exchange almost inappropriate, after all it pays the insurance, but that only means that everyone pays. I hope you can help me drive without an accident all the time! I will take pictures.