Clunking Noise after Tire Rotation

What is your question?

I had my tires rotated and now I have a loud Clunking noise in the front. I can feel it under my feet (like a baseball bat hitting it) and it sometimes goes all the way across the front end. I have taken it back in, they did a frontend alignment but the noise is still there. I don't hear it as much at speeds over 50mph. 2 months ago I had the rear links and front stablilzer shaft links replaced with no noise afterwards.