POOR QUALITY FOR CASH

I BOUGHT A 2012 CHEVROLET SONIC ABOUT A MONTH AND A HALF AGO, I HAD THE CAR FOR ABOUT 3 DAYS WHEN I NOTICED SOME FUNNY RATTLING NOISE ON THE CAR, APART FROM THAT THE CAR DOES NOT IDLE ON ONE RPM IT KEEPS SEARCHING I HAVE PHONED CMG (ANDREW) AND TOLD HIM ABOUT THE PROBLEM. HE SAID I MUST BRING THE CAR BACK THEY WILL FIX IT FOR ME, THAT MORNING WHEN I WAS @ CMH TO RETURN THE CAR I NOTICED THE DRIVER SIDE FLICKER ON THE WHEEL PANEL IS ALSO FALLING OUT. SO I LEFT THE CAR THERE AND PHONED HIM AND ASKED NICELY TO PLEASE FIX IT! SINCE I GOT THE CAR BACK THE CAR WAS STANDING MOST OF THE TIME, RUNNING LONG MILES INSTEAD OF TRAFFIC SO SINCE YESTERDAY MORNING THAT CAR IS REACTING LIKE IT'S GOING MAD! I AM SORRY I DON'T PAY THAT AMOUNT OF MONEY FOR A CAR THAT MIGHT AS WELL BE CALLED S****!