2017 FORD FIESTA Vehicle Speed Control Problems

I WAS IN AN ACCIDENT IN 2019 A FEW MONTHS AFTER PURCHASING CAR SINCE THEN MY ENGINE LIGHT WAS ON. HAD IT SERVICED AND THE ENGINE LIGHT WAS STILL ON. WAS TOLD IT COULD BE A TRANSMISSION PROBLEM. EVERY NOW AND THEN IT WOULD SHUTTLE ONCE STARTED. TODAY IT DIDN'T WANT TO EXCELLERATE WHILE DRIVING

ON JULY 15TH 2019, MY SON WAS GOING AROUND A SHARP RIGHT CORNER WHEN THE CAR SPED UP OUT OF CONTROL AND CRASHED INTO A UTILITY POLE HEAD ON. MY SON WAS DRIVING ON A CITY STREET AND WAS GOING APPROXIMATELY 30 MILES AN HOUR. HE'S UNCERTAIN WHAT CAUSED THE SUDDEN ACCELERATION. THE CAR WAS TOTALED AND MY SON HAS A SEVERELY BROKEN FOOT.

WHEN I MOVED GEARSHIFT FROM PARK TO DRIVE, CAR ACCELERATED VIOLENTLY. I DO NOT BELIEVE I ACCIDENTALLY USED THE ACCELERATOR, THIS OCCURED IN PARKING LOT.AFTER MOVING ABOUT 20 FEET I HIT A HEAVY GATE WITH ENOUGH FORCE TO DO EXTENSIVE DAMAGE TO CAR INCLUDING BENT CHASSIS.

I STOPPED TWICE ON AN INTERSECTION AND A TRAFFIC LIGHT AND THE ENGINE REVVED UP TO 3000 TO 4000 RPM INVOLUNTARILY FROM BETWEEN 500 AND 1000 RPM AND I HAD TO STEP HARD ON THE BRAKE IN ORDER NOT TO HAVE THE VIBRATING CAR MOVE FORWARD. NO, I DID NOT HIT THE BRAKE AND THE GAS PEDAL AT THE SAME TIME. AFTER I SHIFTED THE CAR INTO NEUTRAL AT THE NEXT RED LIGHT IT DID NOT SHOW THIS BEHAVIOR AGAIN. SO IT LOOKS LIKE A SOFTWARE GLITCH IN THE SHIFTING COMPUTER PART.