Believe me. Now I'm telling the truth

The title of this post describes fairly accurately Bank of America's stance with regard to debts they have sold to collection agencies.  In the sales agreement the bank said that it would not provide records supporting their claim.  Further, it said that some of the claims it sold might already have been extinguished in bankruptcy court. Finally, it said in the agreement that the balances were "approximate" and in some cases the debt may have been paid in full.  Yet when the agencies have taken debtors to court, BofA says that their records are perfect and they can prove it with "computerized and hard copy records". 

Which is the correct version?