2005 SUZUKI RENO Power Trainautomatic Transmission Problems

I WENT TO GO GET MY CAR CHECKED OUT AT A LOCAL AUTO PARTS STORE. TURNED ON MY CAR AND WHEN I WAS ON DRIVE IT WAS SHOWING SOMETHING WEIRD ON IT WHEN I PUT IT ON DIFFERENT GEARS THEY WOULD NOT GO IN ORDER. SUCH AS IF IT WAS IN PARK IT WOULD SHOW A D FOR DRIVE OR IF IT WAS IN REVERSE IT WOULD SHOW 3RD GEAR AND SO ON. WHENEVER I WOULD CHANGE GEARS IT WOULD KICK REALLY NASTY AND SHAKE ALOT AND I WOULD HAVE TO PUSH THE GAS JUST SO I COULD MOVE. THE EMPLOYEE THEN USED A CHECK ENGINE LIGHT DEVICE AND I HAD AN O2 SENSOR ISSUE AND A TRANSMISSION RANGE SENSOR ISSUE. *KB

I GOT MY CAR IN MAY, 2006. IT WAS BRAND NEW WHEN I BOUGHT IT, BUT IT WAS IN THE SHOP ONLY SIX DAYS AFTER. I BEGAN TO NOTICE THAT MY CAR WOULD JERK WHEN IT WAS SHIFTING GEARS (ALTHOUGH IT WAS AN AUTOMATIC). OVER ABOUT A WEEK'S TIME, IT GOT MUCH WORSE AND I HAD TO BRING IT IN FOR REPAIRS. I WAS TOLD THAT THE TRANSMISSION HAD NOT BEEN UPDATED. I BROUGHT IT BACK THREE MORE TIMES WITH THE SAME PROBLEM. THE 4TH TIME I BROUGHT IT BACK, IT WAS SO BAD THAT NOT ONLY WAS IT JERKING WHILE SHIFTING, BUT WHILE STAYING AT A STEADY SPEED AS WELL. FINALLY, MY CHECK ENGINE LIGHT CAME ON BECAUSE MY TRANSMISSION WAS BAD. AT THE SAME TIME, MY PASSENGERS SIDE AIRBAG SENSOR WAS NOT WORKING. I WOULD SIT IN THE SEAT AND THE LIGHT WOULD COME ON SAYING "PASSENGERS AIRBAG...