By any chance, did you dispute this with the CRAs at the same time? (1 2 punch?)
I know you had disputed it before you sent the CAs a letter but was just wondering if you had disputed it again.
If you didn't........dispute again. now. Do it by certified mail and then send the CA a
DV2. You don't have to provide them with ANY info. They need to validate the debt........and they haven't done that yet.