2000 Volkswagen Cabrio

I HAVE HAD VARIOUS ELECTRICAL PROBLEMS WITH THIS CAR THE SPEEDOMETER FREEZING OR THE SINCE IT WAS UNDER WARRANTY. SOMETIMES MY AIR CONDITIONER WON'T START. CHECK ENGINE LIGHT, ABS OR THE CHECK TRUNK COMES ON HAS BEEN DOING THIS SINCE THE CAR WAS UNDER WARRANTY. THEY TOLD ME IT WAS JUST THE SUMMER HEAT. RECENTLY LAST MARCH I TOOK IT TO FREEWAY THEY SAID IT WAS ONE PART THAT WAS FAILING. I BOUGHT THE PART FROM VOLKSWAGEN AND HAD IT INSTALLED. THE LIGHT STILL CAME ON. I TOOK IT TO VOLKSWAGEN RIVERSIDE THEY SAID IT WAS A FUSE YET I HAD ALREADY PAID FOR THE OTHER PART. I ALSO BOUGHT A TURN SIGNAL SWITCH BECAUSE FREEWAY SAID THAT IS WHY MY HAZARDS COME ON INSTEAD OF A RIGHT TURN SIGNAL. IT STILL BLINKS HAZARDS TILL THIS DAY. EVEN AFTER I TOOK IT TO VOLKSWAGEN RIVERSIDE SINCE FREEWAY VOLKSWAGEN COULD NOT FIGURE IT OUT. VOLKSWAGEN RIVERSIDE TOOK MY CAR APART AND STILL COULD NOT FIND OUT WHAT WAS WRONG WITH THE ELECTRICAL. THE MECHANIC WAS LOOKING FOR THE PROBLEM ALL DAY AND WHEN HE PUT MY CAR BACK TOGETHER HE FORGOT TO PUT THE LIGHT FIXTURE BACK INTO THE RIGHT SIDE OF MY CAR. BECAUSE OF THAT A BULB MELTED SOME PLASTIC AND IT WON'T FIT BACK IN SO IT'S HANGING IN MY TRUNK. THIS IS HAZARDOUS BECAUSE I DRIVE TO WORK ON THE FREEWAY EVERY DAY. I SHOULD NOT HAVE TO PAY FOR THESE PROBLEMS ANYMORE. I JUST WANT SOMEONE TO FIGURE OUT WHAT IS REALLY WRONG AND FIX IT. I HAVE SPENT APPROX 1,000 -2,000 DOLLARS IN REPAIRS THAT DIDN'T SEEM TO EVEN BE WHAT THE PROBLEM WAS . SO NOW I HAVE A NEW TURN SIGNAL SWITCH AND SOME OTHER PART THAT WAS LIKE 300. NOT TO MENTION THE FUSES I HAVE BOUGHT AND WATER PUMPS, RELAY SWITCH AND MANY OTHER PARTS. I HAVE BEEN PAYING FIXING PROBLEMS THAT HAVE EXISTED SINCE IT WAS UNDER WARRANTY AND THEY TOLD ME THERE WAS NOTHING WRONG JUST THE HEAT. YET, AFTER SOCKING ALL OF THIS MONEY INTO THE CAR THE PROBLEMS STILL EXIST. JUST THE OTHER DAY MY CHECK ENGINE LIGHT WENT ON AGAIN. *NM