Police Officer lost accident report in which a pedestrian was injured by a bicyclist while lawfully crossing a crosswalk. This resulted in a head injury and a 911 call. The officer gave an accident report "receipt" with a case number to the pedestrian before she was taken away on an ambulance. Now the officer says she lost the cyclist's info and does not have to do the report as she was only doing it as a "favor". What can we do? Can we hold the police liable? Can we request phone recordings from the precinct's line where she confirmed some details of the accident and tried to mislead us into not pursuing the report or any reimbursement that may follow?