It’s hard to know the answer because it’s impossible to know your exact situation. A credit score factors in both non-revolving (car loans or mortgages, for example) and revolving (usually credit cards) credit. Diversity of credit has an effect, as do on-time payments and the amount of credit you access versus your credit limit (under 10% is best of all, but under 30% is considered acceptable).
Write a letter to the specific credit reporting agency that shows the falsehood, whether it is Experian, Equifax, or TransUnion. Explain the mistake and include a copy of the highlighted report along with your documentation. Although certain bureaus now let you submit disputes online, it’s not a bad idea to send this letter by certified mail, and keep a copy for yourself. The reporting agency has 30 days from the receipt of your letter to respond. The Federal Trade Commission provides advice on contacting the credit bureaus about discrepancies. Here are the contact numbers and web sites for the three credit bureaus: