2004 NISSAN PATHFINDER Unknown Or Other Problems

I do not have an actual incident to report, but just trying to find out how you can get all these letters and calls from 3rd party companies to STOP! I have contacted my dealership and have entered my VIN on the NHTSA.gov/recalls site and there are no active recalls on my vehicle. I get letters almost weekly and the last one is designed to look like it actually is from my State of GA Motor Vehicle Division. I also receive calls on my home and cell phone. These companies need to be fined or something. If they are not legit, then how can they use all the insignias of State of GA and NHTSA and Nissan? What can someone do?

COMPLAINT CONCERNS 2004 NISSAN ARMADA. MY VEHICLE MAKES AN UNBEARABLE FLUTTERING NOISE (LIKE A HELICOPTER SOUND) AT SPEEDS OF 40 MPH +; THE SOUND IS SO LOUD IT HURTS OUR EARS, ESPECIALLY THOSE OF OUR THREE YOUNG CHILDREN. ALSO, THERE ARE MAJOR AIR LEAKS FROM THE FRONT DASH AND SIDE DOORS WHICH THE DEALER HAS ATTEMPTED TO REPAIR BUT HAS NOT BEEN SUCCESSFUL. WE HAVE BEEN TOLD NOW FOR OVER TWO MONTHS THAT THE WEATHERSTRIPPING NEEDED HAS BEEN ON "BACK ORDER!" MY VEHICLE HAS ALSO DEVELOPED AN UNUSUAL ENGINE NOICE (LIKE SOMETHING LOOSE IN THE ENGINE COMPARTMENT) AFTER APPROXIMATELY FOUR WEEKS OF USE AND DEALER, WHILE ACKNOWLEDGING "ISSUE" CANNOT LOCATE SOURCE OF "ISSUE." THE NOISE PROBLEM IS SO BAD THAT WE CANNOT USE THE VEHICLE FOR HIGHWAY USE! *AK

FLUTTERING WIND NOISE WHEN DRIVING. THE NOISE STARTS OUT AT 40 MPH AND GRADUALLY INCREASES TO A HIGHER DECIBEL RANGE WHEN SPEEDING UP TO 70 MPH. ALL THE WINDOWS ARE WIND UP BUT THIS STRANGE WIND NOISE CANNOT BE LOCATED. THE NOISE IS FLAPPING SO LOUD AT 70 MPH THAT IT HURTS MY FAMILY'S EARS. DEALER STATED IT'S AN ENGINEERING ISSUE AND IT CANNOT BE REPAIRED. I'VE CONTACTED CONSUMER AFFAIRS BUT THEY'RE SAYING THERE' S NO OTHER REPORT BESIDE MYSELF SO THEY'RE NOT TAKING ACTION. I NEED HELP AT THIS POINT- WHERE DO I GO OR WHAT DO I DO??? *JB