Havent heard any back yet!!!

I believe that's true but that can take up to 60 days to reflect on your credit report and the claim has to be verified by the bureaus.

Nico is correct. Furthermore, keep in mind that not being able to verify a claim only means that they cannot continue attempts to collect or report it to the credit reporting bureaus. In a perfect world, it would end there, but the reality is that there is nothing stopping them from selling the debt to another agency, which can then resume collection efforts. This is one of the types of debt sometimes referred to as "zombie debt".

Depends on whether you dispute from your free annaul report or purchased reports:

Purchased: 30 Days
Free: 45 days