2015 AUDI A4 ALLROAD Steering Problems

I NOTICED THE STEERING STARTED GETTING HARD TO TURN. I TOOK TO AUDI DEALER THEY SAID IT WAS FINE. I SAID NOT I KNOW MY CAR. ON THE HIGHWAY 2 WEEKS LATER ENTERING A CURVE AT HIGH MPH THE CAR WOULDN'T TURN. I TAPPED BRAKES SEVERAL TIMES AND FINALLY WITH 2 HANDS I COULD TURN AROUND CURVE. VERY SCARY AND BARELY MADE TURN. I PROCEEDED TO HOME BUT AT A TURN I STARTED THE TURN AND THE STEERING AGAIN STIFFENED SO HARD IT SENT ME TOWARDS THE CROSSWALK AND LUCKILY THE BRAKES STOPPED ME INCHES FROM HITTING A BOY ON HIS BIKE. I KEPT HITTING BRAKES AND FINALLY THE WHEEL RELEASED THE TENSION. I DROVE HOME AND LEFT IT UNTIL I GOT AN APPOINTMENT AT AUDI DEALER. I CAREFULLY DROVE IT DOWN TO DEALER AND HALF THE DRIVE IT WAS FINE AND HALF THE DRIVE THE CAR I BELIEVE ELECTRONICALLY...

STEERING SHAFT IS FAULTY. WHEN DRIVING THIS CAR, ESPECIALLY AT HIGH SPEEDS, THE STEERING IS EXTREMELY UNPREDICTABLE. AT LOWER SPEEDS, THE STEERING IS NOTCHY, YOU CAN'T SEEM TO FIND "CENTER" AND CONSTANTLY HAVE TO ADJUST THE STEERING WHEEL TO REMAIN STRAIGHT ON THE ROAD. THIS HAPPENS WHILE MOVING, ON CITY STREETS AND HIGHWAYS.

STEERING IS LOCKING UP/BECOMES HARD TO TURN WHILE DRIVING. THIS ALMOST CAUSE ME TO CRASH AS I COULD NOT TURN EASILY IN AN INTERSECTION. I RECENTLY HAD THE CAR SERVICED (IN THE LAST MONTH) REGARDING A HEATER RECALL. ABOUT 3 WEEKS LATER THIS PROBLEM STARTED TO OCCUR OUT OF THE BLUE. NO WARNING LIGHTS HAVE COME ON.