Not legal advice, but to the best of my knowledge, he is on the hook for the debt if it goes into default. I expect that is when he will come through on his original promise, though I can understand your worry. If he made an agreement with you in writing that he would do what you said, then it seems possible that you could sue him, though I would try to work things out. I hope that helps.
Check the statute of limitations on debt in your state. It may or may not be too for them to sue you on the alleged debt. I believe that the statute of limitations for Illinois debts is four years for breach of contract, five years for open accounts or unwritten contract.
If you have already given them good reason to know that the bill is not yours, and they continue to attempt to collect, that could be a violation of the FDCPA, possibly entitling you to max $1000.00. Please feel free to contact my office early this upcoming week and we'll try to put you in touch with an attorney who might be able to assist you on contingency.
It sounds as though they have been harassing you, feel free to contact my office and we can try to put you in touch with an attorney in your area who might be able to assist you. Good luck with this issue regardless.
It sounds to me as though they are a collection agency but they are lying to you. Further research would have to be done on them to determine if they are not a scam agency just trying to get money from you that bought your information.
I think you might be entitled to max 1000.00 for any lies and/or misleading communications, and you can feel free to contact my law firm to see if we can put you in touch with a PA attorney who may be able to assist you. Most attorneys are helpful...
In the months that it took them to finally respond, if they attempted to collect via any correspondence, or phone calls, etc directed towards you, they likely violated your rights under the Fair Debt Collection Practices Act (FDCPA). As a result, you could be entitled to a maximum of $1000.00 under federal law.
It also does not sound, in my opinion, that they provided you with sufficient validation, and thus their response to your request for validation could be deemed a misleading...
Not legal advice, but from my experience, i would check to see if you were provided with proper notice in regards to any court hearing. If you were not provided with proper notice, it is possible that you could file a motion to vacate judgment with the court, and then explain to the judge yourself that you were not provided with proper notice, and also that you want the other side to prove that you owe what you said that they owe.
Also, I would examine your communications with this debt...