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File a formal complaint with the CFPB since your disputes have failed. They have admin enforcement over the FCRA, and either the creditor or CRA is not complying.
My guess is that the manual update being made and filed with the CRA is not being entered into the creditor's regular automatice monthly updating system, causing any correction to them be overwriten.
I have a VW Credit loan still showing as "open" with 0 balance even though the car was totaled and the account was closed and sent to reconcilation. The reconciliation loan shows up as closed on my credit report, though. My only thought there is that the loan would still be active if the car wasn't totaled.
What RobertEG said