2002 FORD FIESTA Power Train Problems

I HAVE A DPS6 TRANSMISSION IN MY 2012 FORD FIESTA SES THAT IS MALFUNCTIONING AS DESCRIBED BY THE MANUFACTURER. THERE IS A SEVERE SHUDDER AND SLIPPAGE IN THE TRANSMISSION, AS WELL AS A RACING OF THE ENGINE WHEN MY FOOT IS ON THE BRAKE AND OFF THE GAS PEDDLE. THE RPM'S RACE TO OVER 1800 RPM'S WHILE AT A LIGHT OR IN HEAVY TRAFFIC. WHEN I RELEASE THE BRAKE AND ACCELERATE THE TRANSMISSION RE-ENGAGES AND SLIPS SO BADLY, THAT ON SEVERAL OCCASIONS OTHER DRIVERS HAVE ALMOST DRIVEN INTO THE BACK OF MY CAR. ONCE MY CAR GETS PAST THIRD GEAR, IT DRIVES AND APPEARS TO SHIFT AND DRIVE BETTER UNTIL LETTING OFF THE GAS AGAIN. I GET PEOPLE SCREAMING AT ME AND GETTING VERY UPSET DURING RUSH HOUR TRAFFIC. I COULD SEE SO MANY WAYS THAT THIS IS A SAFETY ISSUE, EVEN WORSE THAN THE DOOR LOCK RECALL. I AM...