2002 VOLKSWAGEN NEW BEETLE Visibilitywindshield Problems

I BOUGHT MY NEW BEETLE BRAND NEW IN AUGUST 2001. THE DAY AFTER I BROUGHT IT HOME (OVER 2 HOURS AWAY), THE CHECK ENGINE LIGHT CAME ON. I CALLED THE DEALER AND THEY SAID IT DIDN'T MEAN ANYTHING UNLESS IT WAS FLASHING SO I THOUGHT NOTHING OF IT. 2 MONTHS LATER MY ABS WENT OUT WHILE I WAS AN HOUR FROM MY HOUSE AND IT HAD TO BE TOWED AND REPLACED. THE WINDOWS CONTINUALLY GO UP AND DOWN BY THEMSELF BUT THE DEALER CAN'T FIX IT. I TOOK MY CAR BACK TO THE DEALER YESTERDAY BECAUSE IT WAS LEAKING BRAKE FLUID AND TOLD THEM AGAIN ABOUT THE CEL LIGHT. THEY THEN TOLD ME I NEEDED TO HAVE THE MASS AIR FLOW SENSOR REPLACE (NEARLY $400) AND THAT IS WHY MY CAR HAS BEEN DOWNSHIFTING BY ITSELF AND LOSING POWER WHILE DRIVING. THIS MAKES ME FEEL UNSAFE TO DRIVE THE CAR...