[Vas]

I have 2003 PT Cruiser with 45K miles on it. It started doing this about 6 months ago. Speedometer sometimes jumps all away or drops to 0 at speeds about 20mph and lower, car is jerking when this happens (I guess it is trying to shift accordingly to speedometer speed). It also sometimes has rough shifting to up to 40-50mph and sometimes gets stuck in one gear, and I have to turn off the ignition to reset it, I have read it may be a limp mode, when computer shift to 2nd gear to prevent further problems. Ignition switch test shows P700 code (TCM problem), but when it started to happen few months ago I took it to dealership and they replaced Transmission computer and speed sensors, and it did not solve the problem. They suggested the other source of the problem is the car battery which was working fine, but their tests showed that it needed to be replaced. It was replaced and it did not help. Now I just afraid of them after $1000 repairs nothing was fixed and the problem gets worse - more jerking more often. What can be a problem?

Btw is there anyway to get my money back from dealership when they pull this kind of crap - replacing working parts and not solving problem?