AVIS – We’re supposed to pay for damage, although we didn’t do it!!! *SUPPORT*

Hello, we just have such an annoying case with AVIS… We rented a BMW at the airport in Munich to drive a weekend to Cologne. Of course, a personal handover by an employee did not take place. Since the car was parked in a dark underground garage, no obvious damage could be detected by us due to the external circumstances. However, when we returned the car to Munich after the weekend, there were already two(!) AVIS-Mita rbeiter ready to check the car for damage. Immediately you have noticed a scratch on the rim as well as a large rockfall on the bumper. We immediately noted on the handover log that this damage has not been caused by us. Honestly, if we had caused the damage, we would also pay it. But we do not pay 900 € for something that we did not cause… After AVIS has charged our credit card, we have the money like Since then we have been in constant correspondence with AVIS. We could name a total of 2 witnesses who can confirm that the damage has not been caused by us. Do we have chances against AVIS? Thank you for your help!!!