My Latest Frustration

So...a couple of weeks ago I paid about 200 bucks to get my car fixed...well it wasn't actually fixed. So, I took it back to the same guy and asked him to try again. Well, he was going to change the part that he thought was causing the problem, but my car doesn't have that particular part, so he told me he didn't know what to tell me and sent me on my way. I talked to another guy who was going to charge me $80 an hour just to figure out what was wrong, no including the price of fising the problem but he had no clue where to start and told me it would be a process of elimination changing each part one by one until the problem went away. Well, needless to say, I didn't go to him. I took my car to a Chrysler dealership. They changed three more parts, charged me another 400 bucks and then test drove the car before returning it to me. On that test drive, the check engine light turned on AGAIN! So, they took it back to the shop and apparently they now have to replace the ECM(I think that's what it's called), which is basically the computer system in my car and it is a whopping 900 dollars to fix! Yikes! Luckily, my warranty will cover the $900, but this whole situation is causing way too much stress. I cannot wait to have the problem resolved, if that ever happens! This computer thing better be the last thing that gets broken for a very long time.