Air Conditioner problems of the 2006 Ford Explorer

When the car stops, starts or drives slow. . . It jerks when changing gears from 1st through 3rd, both up- and down shifting. It has also started to slow (for no apparent reason) when driving at a steady speed on the highway (going around 65-70 miles an hour), I have had mullinax Ford look at the transmission 5 times now, and it is still there. Currently I am involved in a lemon law case trying to get Ford to buy my car back. They are stating that there is no significant problem with my transmission and at the same time saying that it is due to abuse or neglect on my part ???? I can only suggest that others take the same route - the more the better to get the attention of Ford to completely fix this problem. I also have had my compass worked on (did not show anything or just two lines) , the gear shifter replaced (wouldn't shift out of 'p'), the rear window replaced (due to water leak) and the air conditioning system replaced as there was something bend ???. I also have experienced that when work has been done on the car the breaks worked differently afterwards. In my opinion the 2006 Ford Explorer is a lemon.