I contacted Credit Protection Associates regarding a debt from 2003 or 2004. The amount was less than $100 so I offered a PFD.
I got a response yesterday! They closed the account PIF and are removing it from all three credit bureaus! I have a second debt with them for which I offered the same PFD, so I have my fingers crossed that they will remove both.
Thank you so much for your help here! The letters and follow up are completely worth it!