Flynrider is exactly right.
As far as the law is concerned, the debt has already been validated via judgment. Once a judgment is in place, you can do all the kicking, screaming, complaining to bar associations, and requesting validations that you want. But it's not going to do you a lick of good.
Sorry if that was harsh, but you need to understand where you are in this game right now. Forget about debt collection laws and your rights under such laws. Right now, you need to focus on court rules.
Now, you state that you were served papers, and that you disputed the allegations in those papers in a filing with the court clerk, which was also sent to the attorneys. Correct so far?
Then you were served with papers asking for information (a.k.a. a "discovery request"), and you did not respond. Correct?
Then a judgment was entered against you, I'm assuming a default judgment, correct?
Here's my issue. Your report makes it sound as though you received a default judgment against you for failing to respond to a discovery request. I'm not familiar with your state's court rules, but this would be highly unusual. I'm thinking there was more that you missed.
Did you miss a court date? Did they file a motion for summary judgment based on your failure to answer the discovery request? Was judgment entered against you as a sanction for not complying with the discovery request?
At any rate, there is a judgment in place, and you have three options:
1) Pay the judgment, either voluntarily or through garnishments and seizures;
2) File bankruptcy; or
3) Get the judgment set aside and start over.
Option 3 gives you the most favorable outcome, but its not an easy feat, as pointed out above. In fact, it's all but impossible without an attorney's assistance.
And that's the long and short of it. You can still file any complaints you had before, but doing so isn't going to make this judgment debt go away.
Best of luck!