2016 Toyota Avalon STRUCTURE,VEHICLE SPEED CONTROL,SERVICE BRAKES

ON OCTOBER 1, 2018, AT 8:25 A.M.I WAS PULLING INTO A PARKING SPACE AT WORK IN MY 2016 AVALON (12,141 MILES). I WAS 'RIDING THE BRAKE' TO PULL ALL THE WAY INTO THE PARKING SPACE. THE CAR TOOK OFF INTO LANDSCAPE, CROSSED A ROAD AND WENT DOWN A HILL. I HIT THE PARKING LOT AND WAS KNOCKED TO MY SIDE. THE CAR WENT BACK UP THE HILL AND CROSSED THE ROAD AGAIN, WENT THROUGH MORE LANDSCAPE, BUSHES, ETC. BACK INTO THE ROAD AGAIN AND STOPPED.THERE WAS OVER 11,000 DAMAGE TO MY CAR AND I HURT MY BACK AND NECK. TOYOTA EXAMINED THE BLACK BOX AND SAID THE GAS PEDAL WAS BEING STRONGLY DEPRESSED WITH NO BRAKING. THAT IS IMPOSSIBLE BECAUSE AFTER I HIT THE PARKING LOT AFTER COMING DOWN THE EMBANKMENT, MY FOOT FLEW OFF THE BRAKE AND WAS ON NOTHING AS I WAS ALL THE WAY ON MY RIGHT SIDE. 2ND INCIDENT YESTERDAY, ON 03/16/19, I WAS PULLING INTO A GAS STATION AND WAS ALMOST STOPPED AFTER TAPPING THE BRAKE TO GET PULLED UP TO WHERE I WAS TO STOP AND THE EXACT SAME THING HAPPENED AS MY FOOT WAS ON THE BRAKE, THE CAR TOOK OFF TOWARDS THE GAS PUMP. I WAS PRESSING THE BRAKE AS HARD AS I COULD AND WAS TRYING TO GRAB THE GEAR SHIFT TO PUT INTO PARK. I ONLY WENT ABOUT 20-30 FEET BEFORE THE CAR STOPPED MISSING THE GAS PUMP BY ONLY ABOUT 1 AND 1/2 FEET. I CAN'T SAY FOR SURE IF THE BRAKES STOPPED THE CAR OR IF I WAS ABLE TO GET IT INTO PARK. I HAD THE CAR TOWED TO MY HOME AND WILL NEVER DRIVE THIS CAR AGAIN. I AM NOT SURE WHAT I AM GOING TO DO BECAUSE THE CAR IS FAR FROM PAID FOR AND I KNOW TOYOTA WILL BE OF NO HELP. I KNOW FOR SURE THAT EVENTUALLY SOMEONE IS GOING TO BE KILLED AS I TRULY BELIEVE THIS IS NOT JUST HAPPENING TO ME. AFTER THE FIRST INCIDENT, I SENT A CERTIFIED LETTER TO THE PRESIDENT OF TOYOTA AND THEIR LEGAL DEPARTMENT AND THEIR REPLY WAS TOYOTA WAS NOT AT FAULT.