demed raises some good points to consider. The CA is requried to send their formal letter to you within 5 days of any contact with you about the debt, and posting in your CR would arguably qualify as such, so you may have a violation of the FDCPA if their letter was sent more than five days after their public posting with the CRA.
As for your PFD letter that was sent before securing initial DV, that is a definate no no! It is very difficult to argue, after you send an offer to settle a debt, that you have no responsibility for the debt. They will most likely use that PFD offer against you. Many state SOL laws provide for reset of the SOL if subsequent payments or offers to pay are made. I would advise that you research your state SOL provisions.
