TERRIBLE SERVICE AND NO AFTER SERVICE

TERRIBLE SERVICE,SOLD ME A VEHICLE AND ITS GONE MORE THAN A MONTH NOW WITH NO NATIS.WHEN I PHONE THEM THEY SAY THE PREVIOUS OWNER HAS LOST THE NATIS.I DONT UNDERSTAND WHAT THAT MEANS BECAUSE I BOUGHT THE VEHICLE FROM VW RIVONIA HATFIELD DIRECTLY,SALESMAN WAS THOMAS-TOTAL WASTE OF TIME DOESNT EVEN ANSWER HIS PHONE.THEY SHOULD BE REPORTED TO VW SA.