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They may be willing to waive some of the late penalties or spread the past due balance over few payments. Let them know you're anxious to avoid charge-off, but need some help. Your creditor may even be willing to re-age your account to show your payments as current rather than delinquent, but you'll have to actually talk to your creditors to negotiate.
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.