2004 Dodge Durango Electronic Stability Control Visibility Problems

I PURCHASED A BRAND NEW 2004 DODGE DURANGO FROM A REPUTABLE CAR DEALERSHIP EXPECTING IT TO BE THE HIGH QUALITY THAT I HAVE ALWAYS BEEN USED TO WITH DODGE. HOWEVER, I AM EXTREMELY DISSATISFIED. WHEN I DRIVE THIS VEHICLE ON THE HIGHWAY ( AT POSTED SPEED OR LESS), IT FEELS AS THOUGH THE WIND WILL PICK IT UP & CARRY IT AWAY! IT SWAYS & SHIMMY'S CONSTANTLY. IT FEELS AS THOUGH HIGH AIR CURRENTS ARE CURCULATING INSIDE THE VEHICLE ALSO. IT DOES NOT FEEL SAFE AT ALL. WHAT SHOULD I DO? I AM RETIRED & LIVE ON A VERY MODEST INCOME, SO I CANNOT JUST GO HAVE THIS PROBLEM REPAIRED WITH NO THOUGHT OF THE COST. I ALSO HAVE ANOTHER PROBLEM WITH MY DODGE DURANGO. WHENEVER I HAVE THE WINDOW ( OR WINDOWS) OPEN AT ALL, WHETHER IT BE A CRACK OR COMPLETELY OPEN, A VERY LOUD, ALMOST DEAFENING ROAR ENTERS THE VEHICLE. I CAUSES SUCH HORRIBLE EAR PAIN TO ALL INSIDE THE DURANGO, THAT WE CAN NEVER HAVE THE WINDOWS OPEN AT ALL. THIS MAY SEEM LIKE A MINOR PROBLEM, BUT ACTUALLY IT IS NOT. BESIDES THE FACT THAT I AM PAYING FOR THIS VEHICLE THROUGH A LOAN & EXPECT IT TO PERFORM AS A NEW VEHICLE SHOULD, MY WIFE HAS SEVERE ASTHMA & MANY TIMES WILL NEED FRESH AIR IN ORDER TO BREATHE PROPERLY. IT IS NOT ALWAYS POSSIBLE TO STOP AT THE SIDE OF THE ROAD! PLEASE TELL ME WHAT I SHOULD DO. THANK YOU VEY MUCH!*AK