Subject to subsection (f) and except as provided in subsection (g), if the completeness or accuracy of any item of information contained in a consumer’s file at a consumer reporting agency is disputed by the consumer and the consumer notifies the agency directly, or indirectly through a reseller, of such dispute, the agency shall, free of charge, conduct a reasonable reinvestigation to determine whether the disputed information is inaccurate and record the current status of the disputed information, or delete the item from the file in accordance with paragraph (5), before the end of the 30-day period beginning on the date on which the agency receives the notice of the dispute from the consumer or reseller.

Except as provided in subparagraph (C), the 30-day period described in subparagraph (A) may be extended for not more than 15 additional days if the consumer reporting agency receives information from the consumer during that 30-day period that is relevant to the reinvestigation.

Subparagraph (B) shall not apply to any reinvestigation in which, during the 30-day period described in subparagraph (A), the information that is the subject of the reinvestigation is found to be inaccurate or incomplete or the consumer reporting agency determines that the information cannot be verified.

Before the expiration of the 5-business-day period beginning on the date on which a consumer reporting agency receives notice of a dispute from any consumer or a reseller in accordance with paragraph (1), the agency shall provide notification of the dispute to any person who provided any item of information in dispute, at the address and in the manner established with the person. The notice shall include all relevant information regarding the dispute that the agency has received from the consumer or reseller.

The consumer reporting agency shall promptly provide to the person who provided the information in dispute all relevant information regarding the dispute that is received by the agency from the consumer or the reseller after the period referred to in subparagraph (A) and before the end of the period referred to in paragraph (1)(A).

Notwithstanding paragraph (1), a consumer reporting agency may terminate a reinvestigation of information disputed by a consumer under that paragraph if the agency reasonably determines that the dispute by the consumer is frivolous or irrelevant, including by reason of a failure by a consumer to provide sufficient information to investigate the disputed information.

Upon making any determination in accordance with subparagraph (A) that a dispute is frivolous or irrelevant, a consumer reporting agency shall notify the consumer of such determination not later than 5 business days after making such determination, by mail or, if authorized by the consumer for that purpose, by any other means available to the agency.