I'm telling you what the law is. As it stands the government has a presumed valid clain that you owe them. You won't get that removed from your credit report just because you insist they were in error. As far as the LAW goes, the credit report is CORRECT and there's NOTHING you can do about it.
Now the question you didn't ask is can you do anything to reverse the determination that you owe the money. Alas, I don't think you have a choice. Apparently you ignored the process to the point where you no longer had a statutory right to challenge that. If you have a shred of a chance, you'd need to talk to a lawyer that handles such cases in front of the SSA (I have a friend who is that sort of attorney up in NJ, not that it would help you). I don't have much hope however. The ship has sailed.
And nobody likes having people use profanity. You would be well advised to not abuse the poeple who volunteer to asssist.

