A credit repair company initiates credit challenges to bureaus when they notice errors in your credit reports. Credit report disputes involve challenging credit bureaus, drafting goodwill letters to remove late payments and contacting data furnishers to verify old debts. Credit repair specialists review the results and, if necessary, escalate the dispute process.
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).