Credit bureaus must send a notice of any corrections made to your report. Sometimes, a deleted dispute can reappear on your credit reports if the lender proves its claim is valid. If you find a derogatory mark reinserted on your credit reports, you can dispute it again. If you believe a credit reporting agency or one of your creditors has violated the FCRA, you should submit a consumer complaint to the Federal Trade Commission (FTC).
If you find information that is incorrect, you can file a dispute. Remember too, that items on your credit report that you don't recognize could also be potential signs of fraudulent activity — someone working to secure credit in your name for their own use. Make sure you're clear on items that could potentially be fraudulent, versus those that may simply be inaccurate.