I did DV the CA when I saw it but never got a response. No I didn't do Return Receipt, I didn't know that was the proper way. It is still showing as unpaid. I will goodle what you suggested and do some reading. As far as a DV, I was planning on doing that again, but wasn't sure if I should DV the whole amount or just the balance that they say I still owe which is nothing but their collection fees, for not collecting a penny from me. I dealt with the OC.