If your credit score is keeping you up at night, there’s a little good news this morning. A bad credit score, whether it’s accurate or not, can stand between you and buying a house or even getting a job. Now, the three big companies have agreed to make it easier for consumers to fix bad credit information. Equifax, Experian and TransUnion negotiated for a year with New York’s Attorney General before reaching an agreement that overhauls how the bureaus handle unpaid medical bills and disputes between creditors and consumers.