Hello I will help you with your question,
How did you check the fluid level and what was its condition?
How much fluid did you add?
Did the transmission shift correctly before this?
Are you the original owner and how many miles do you have on this car?
If i understand you added two quarts after checking the level and the engine was off when you checked the level?
The fluid was black on the tip of the stick? How is the color now? How is the level with the engine running and the car on a level surface?
You didn't buy an extended warranty with the car?
I have to agree that this transmission needs replacement. The good news is that there is a remanufactured transmission available from the dealer for $916. according to my price guide. Check with the dealer for current pricing information.
When I was with the dealer we did 2-3 replacements a week so this is not an uncommon occurance but other manufacturers do not have a better track record either.
Sorry for the bad news I wish I had better for you