Any damage of the car can not be repaired without police report. If there are some shop you find to make the damage without police report, they will charge you double or three times the normal charge. Go to Traffic department in Madinath Khalifa and tell them you accidentally damage of your own or somebody did without your knowledge at the parking, and the officer will see the damage of the car and make a report for it.  

"There's nothing we can do to change the past, if it teaches  you a lesson profit from it then, forget it."