2003 AUDI ALLROAD Fuelpropulsion System Problems

THE FUEL TANK HAS DEVELOPED A LEAK ON ITS OWN. I FILLED MY CAR THE THURSDAY SEPTEMBER 3, 2015. ON SEPTEMBER 8, 2015 THE FUEL GAUGE WAS DOWN A QUARTER TANK. I SMELLED GAS OUTSIDE OF THE CAR. MY MECHANIC TELLS ME THE LEAK IS AT A PLASTIC WELDED NUB ON THE RIGHT SIDE OF THE TANK.THIS IS A PLASTIC FUEL TANK. IF I FILL THE TANK ABOVE THE HALFWAY MARK THIS IS WHEN THE TANK LEAKS. THE CAR IS GOING IN FOR SERVICE ON MONDAY FOR A FUEL TANK REPLACEMENT. I HAVE OPENED CASE NUMBER 150699218 WITH AUDI CORPORATE. THEY WANTED ME TO ALLOW THEM TO TOW THE CAR TO A DEALERSHIP AND LET THE DEALER MAKE A DIAGNOSIS. WE WERE DESPERATELY AFRAID THAT THE COST OF THIS WOULD BE EXORBITANT. IT TAKES 10+ HOURS TO GET THE REMOVED AND REINSTALLED. THE TANK IS ABOUT $700.00 WE ARE TRULY...