Sharon,
I'm so sorry to hear that you're still having problems with your car. I thought they replaced the computer and it was running better. You most definitely have been far more patient than I would be...but, it's hard to throw in the towel on this gorgeous car! I do hope that you get the assistance and attention needed to get to the bottom of the issues with your car.
I'm sure Chrysler does not want to lose you as a customer and you don't want to have to give up this car...now, if they want to replace yours with a brand new one that works perfectly, then by all means, go for it!