Driver seat back noise

Hi guys. I have a slight rattling noise coming from what I thought was the seat assembly. I took my car in for service at Toyota Santa Monica and they performed the Front Seat Squeak TSB on the driver's seat. It turned out to be a big headache as the mechanic scratched up my steering wheel as well as other parts of the car when taking the seat apart. I had to take the car in two more times for them to repair the damages. The good news was, I thought, the noise is gone but now after four weeks or so it's back. The crappy part is it's now louder than before! What's happening now is when I apply the brakes and the driver's seat back moves forward, there's a slight rattle coming from the base of the seat back. Now I have no idea what to do as I'm afraid to take the car in for more repair work since they scratched up the interior pretty good the last time. I truly hate driving this car now. I have already tried inflating and deflating the lumbar support and various other seat adjustments.