If an investigation doesn’t resolve your dispute with the credit reporting company, you can request that a statement of the dispute be included in your file and in future reports. You can also ask the credit reporting company to provide a statement to anyone who received a copy of your report in the recent past. You can expect to pay a fee for this service, and a dispute on your credit report does not improve your credit score.
But tread carefully. This a field ripe with scam artists who rebuild nothing but their own bank accounts. If you are approached with an offer of help to negotiate your debt, make sure that you receive a copy of the "Consumer Credit File Rights Under State and Federal Law" and a detailed contract for services including contact information, stated guarantees and an outline of fees and services before you provide any personal information or turn over any financially-related documents. Ask for references, do online research and keep copies of all paperwork and correspondence in case a dispute arises.
With poor credit, you may not be able to get approved for new credit products like credit cards. Although you may still be able to take out an auto loan or a mortgage, you’ll pay a much higher interest rate because of your low credit score. Compared to a borrower with good credit, someone with poor credit can pay $50,000 more in interest on a mortgage. Over an entire lifetime, you could end up paying over $200,000 more in unnecessary interest just because of bad credit.