ON 5 OCCASIONS THE TRUCK SHIFTED FROM PARK INTO REVERSE WHILE RUNNING. DURING ONE OF THESE EVENTS ON 31 OCT 2017 I WAS BEHIND THE TRUCK SETTING UP TO "PULL" A FENCE TIGHT. APPROXIMATELY 5 MINUTES AFTER I GOT OUT OF THE TRUCK IT SHIFTED INTO REVERSE AND KNOCKING ME TO THE GROUND. I WAS STRUCK AGAIN JUST AS THE DRIVERS DOOR (WHICH WAS OPEN) CAUGHT A FENCE POST AND STOPPING THE TRUCK. BEFORE THIS INCIDENT I REPORTED THE PROBLEM TO MY DEALERSHIP IN DEC 2016. I NOTIFIED RAM CARE THE DAY OF THE INCIDENT AND THEY EFFECTIVELY BLEW ME OFF FOR 15 DAYS BEFORE SENDING AN INDEPENDENT INSPECTOR. I RECEIVED FIAT CHRYSLER'S RESPONSE ON 3 MAR 2017. THEY FOUND NO FAULT WITH THE VEHICLE, TRANS, LINKAGE, PARKING PAWL AND BRAKE. TELLING ME IT WAS MY FAULT FOR LEAVING THE VEHICLE RUNNING WHILE NOT IN IT. ON 4 OF THESE OCCASIONS I WAS IN IT. ON 6 OTHER OCCASIONS WHEN TURNING THE TRUCK OFF I HAD TO CYCLE THE TRANS SELECTION LEVER FROM PANK AND BACK TO PARK.