2012 Toyota RAV4, 130,000 miles, automatic, scanned and no codes.

HELP!  I just bought this car in September and thought I had found a good one by reviews and research. It came with good service records and the owner before me bought it as a certified pre-owned vehicle. I am the 3rd owner.   I got in my car from work and the first thing I noticed was the engine maintenance light came on. First time since I have had it (now 5 months). On my 33-mile drive home in heavy stop and go traffic I pressed on my brakes and the engine uncontrollably went to about 4-5,000 rpms, I slammed harder on my brakes, put it in neutral and steered to the right to get out of traffic.  This happened 4 times in that drive home. I towed it to the only mechanic I trust, and they could not duplicate the problem.  Took it to the dealership (Ford) that I bought it from, and they said go to Toyota and have them check the TSB reports. They were of no help in honoring the sale and the salesman was too embarrassed to tell me what their finance dept. was offering me for it.  I had it towed to Toyota, and they say nothing is wrong and labeled it "pedal misapplication".  Now I am coming to find out that this has been a problem for Toyota in the past hence their multiple class action lawsuits for this exact reason. I'm too far upside down to trade it in, $15,000 after tax and licensing and not finding an attorney to take the case. This is NOT pedal misapplication or the floor mats in the way, those clip into place.  I am an experienced driver of 30 years in a variety of vehicles automatic and manual and driving conditions.  To top it off it has cost me my new job that had doubled my pay because I don't have reliable transportation. First Toyota I have ever owned wish I had chosen Honda.  Any help other than your screwed, again, would be appreciated.....PLEASE!!!