Wrecker And Wheel Lift Devices problems of the 2012 Ford Escape

I had stopped at a stop sign and pressed the gas pedal to accelerate and it would not accelerate and began jerking forward parked in front of a business and put car in park and again pressed the accelerator and again it did not accelerate. Backed out and put car in drive and moved about 10 feet from where I had parked and again it jerked forward and did not accelerate. Tried moving a second time with the same results. Parked it and turned it off to call a wrecker. Tried turning it off and turning it on again and this time it worked; accelerated when gas pedal was pressed, did not jerk as it had previously. Drove it without incident but decided to take it to a dealer in wharton, texas who put it on the computer to determine what was causing the problem. It came up with no code. He told me that the Ford Escapes and fusions had a throttle problem and he was sure that was what the problem was, he replaced it at a cost of $484. 60. Although I had just purchase the car, used on July 13, 2013 and was under warranty for engine and powertrain, the warranty did not cover this expense. I feel the dealer should have told me about this problem, but seeing that I am a woman, his bottom line was profit at any cost, he did not inform me. Now I find out that the Ford Escapes are riddled with problems. So much for buying american!.