Chwcks not done properly by Europcar staff

When fetching our hired car on 21 Jun 19 the guy did not do a check under the front and back bumper/scoop. When I returned the car on 28 June 19 a guy checked immediately under the bumper/scoop and found a scratch which I definately did not cause. Europcar deducted R1521 from my account although I told them that I am not responsible for the scratch and it was never checked when I got the car. I am dissappointed in Europcar for assuming that I am responsible and also for deducting money without informing me or my permission.