Though numerous companies claim they can clean up bad credit reports, correcting erroneous information that may appear on credit reports takes time and effort. The details cited to credit reporting agencies cannot be removed by a third party. Rather the details, if misrepresented or inaccurate, can be disputed. Credit repair companies may investigate such information, but so can the individual the report is assessing. Individuals are entitled to free credit reports every 12 months from credit reporting agencies, as well as when an adverse action is taken against them, such as being denied credit based on information in the report.
Credit scoring models usually take into account how much you owe compared to how much credit you have available, called your credit utilization rate or your balance-to-limit ratio. Basically it's the sum of all of your revolving debt (such as your credit card balances) divided by the total credit that is available to you (or the total of all your credit limits).