Accelerator Stuck problems of the 2010 Toyota Tundra

I own an 08 Toyota Tundra. Have done all maintenance work and have records. Had the accelerator pedal problem fixed (?) by Toyota in wellesley massachusetts on 2/5/10. The date below is approximate, I put the car in reverse and it took off smashing my rear bumper which I paid to fix. I just thank god that was not a child behind my car. Since then there have been too many incidents to counts with the accelerator sticking. Called Toyota both dealership and company and was told my truck has been fixed. I am here to tell you it has not been fixed. The more miles I put on the car the more frequently this happens. I was on channel 5 news in mass on Friday 3/5 and sat 3/6 regarding this continuing problem. Toyota is not offering a rental while they look at it and this is a work truck for me. I don't work I don't get paid and I still owe 16k on the truck. I am sending a certified letter to corporate Toyota and putting them on notice regarding the liability on this matter, which is huge. I am not losing my home and everything I have worked hard for all my life because Toyota has a problem they cannot figure out. I myself do not believe there was ever a floor mat problem, that was a delay tactic. But I am reporting to you as I was instructed to do by channel 5 not Toyota or the dealership but by the newscaster that broadcast my story. The acceleration is happening at least 5-9 times a week at various times. If you can help please do. Thank you.