Download the full report. Save the version showing both entries.
Compare the two accounts field by field. Look for refinance, assignment or account-number changes before calling it duplicate.
Ask the reporting lender to confirm. Request which tradeline is valid and which should be corrected or removed.
File the bureau dispute with the same evidence. Keep both complaint references.
Recheck after correction. Confirm the duplicate is gone without losing the legitimate account’s payment history or closure status.
Escalation: if a regulated lender confirms an error but fails to correct its reporting through the grievance process, preserve that confirmation for the appropriate RBI escalation route.
Use the same short chronology and attachments for the lender and bureau. Ask for a written outcome, not only a new score.