They will ask you who they were whats the car number thats a problem and i know u were so messed up that u didnot notice anything around i guess. if u say that blah blah happened they wont give a damn. and u will have to repair ur car on ur own expense. SO u say i parked ur car well and fine in parking and when u got back u found ur bumper busted and claim to get it repaired by the insurance.