2007 Chevrolet Colorado Seat Belts Problems

I WAS IN MY VEHICLE WAS SITTING AT A COMPLETE STOP, IGNITION ON, ENGINE RUNNING, TRANSMISSION IN PARK. I THEN HEARD AN AUDIBLE SCRATCHING PLASTIC NOISE COMING FROM THE LEFT LOWER REAR EXTENDED CAB DOOR. I LOOKED BACK TO SEE WHAT IT WAS (SAW NOTHING) AND NOTICED WHEN I TURNED BACK AROUND MY SEAT BELT WOULD NOT RETRACT. I WAS THEN ABLE TO UN-RAVEL ALL OF THE SEAT BELT WEBBING FEELING NO RETRACTOR TENSION UNTIL IT WAS FULLY EXTENDED. THE SEAT BELT WILL NOT RETRACT BACK INTO THE DOOR / RETRACTOR TO THIS DAY. I AM THE ORIGINAL OWNER OF THE VEHICLE (PURCHASED NEW IN LATE 2007) IT HAS NEVER BEEN IN AN ACCIDENT (MAJOR OR MINOR), IT IS WELL CARED FOR AND NOT ABUSED. I AM FORCED TO PURCHASE A NEW SEAT BELT / RETRACTOR FOR THE VEHICLE. SAFETY RESTRAINTS SHOULD LAST LONGER THAN 4~5 YEARS ESPECIALLY NOT BEING SHOCK LOADED (IN AN ACCIDENT). WHAT IF I WAS BRAKING HARD OR COMING INTO A COLLISION, I WOULD NOT BE HERE TO WRITE THIS. I AM AN AUTOMOTIVE ENGINEER WITH OVER 10 YEARS IN THE INDUSTRY; MOST OF WHICH HAS BEEN TESTING (SOME FMVSS). IT IS OF MY OPINION THAT THIS RETRACTOR / SEATBELT HAS A SERIOUS MANUFACTURING DEFECT OR DESIGN FLAW AND SHOULD BE INVESTIGATED. *TR

THE DRIVER'S SEAT BELT AND MIDDLE FRONT SEAT BELT NO LONGER LATCH. HAVE HAD TO LATCH INTO THE FRONT PASSENGER SEAT BELT RECEPTACLE SINCE FRIDAY 11/11/11. NO DAMAGE OR DIRT ARE VISIBLE. *TR