WHILE I WAS PARKING SUDDEN UNINTENDED ACCELERATION OCCURRED VEHICLE JUMPED THE CURB AND THE VEHICLE SMASHED THE BUILDING WENT THRU THE WALL. THERE WERE TWICE PRIOR INCEDENTS WITH NO ACCIDENT BUT FREAKING OUT WHITHIN LAST 4 WEEKS.THE VEHICLE WAS IN MOTION IN CITY STREET ALL THREE INSTANCES. ALL THREE INCIDENTS I WAS TURNING THE CORNER OR PARKING WITH LESS THAN 5 MILES PER HOUR.