general problems of the 2007 Toyota Scion Tc

This event happen 2 times in the 3years I've owned the car, the 1st incident was 2009 while I was parking my car in a wendys lot. While slowing down to park the car accelerated in the parking spot and while slamming my foot on the brakes it finally stopped but on top parking concrete stopper (not sure about name and also on top of the side walk. The second incident just happen today (5/5/10) while leaving work. As I was backing the car up and getting out the parking spot I put the car in drive and it accelerated forward before putting my foot on the gas, I then again banged my foot on the gas and made sure I was pressing the brake and the car kept on accelerating into a parked car and I was then able to put the car in park. The first time the incident happen I was in denial and second guessing my own driving so I paid to get the front bumper replaced. This is the second time this has happen and I reported the incident to my insurance. Not to mention when I first purchased my scion I had spoke to them about my brakes grinding with in the first 1000 miles , they looked at it and told me everything has checked out. I have since dealt with the problem by allowing myself to be prepared ahead of time to stop. I have also had my brakes replaced which in turn didn't sold the grinding. In the snow my car barely even stops.

My wife's 2007 Scion Tc bought brand new from wondries Toyota in alhambra CA. My wife had three incidents where the brakes just wouldn't engage and felt "flat". First incident happened back in February 2008, second incident happened March 2008 and the third in November 2009. Luckily my wife drives slow. The car was driven in the los angeles area when this happened (not in cold climates). Took it to Toyota, got charged on the inspection but "couldn't find anything wrong" according to the service department (yet still being charged a fee). I had since filed a complaint with the better business bureau (complaint 98471676), Toyota wondries dealership and also Toyota America head quarters but all resulted in vain. It would have been nice for Toyota to admit their flawed design and fix the problem since we are talking about human lives here.