Review your credit reports for accuracy. Your report may contain inaccurate information or might be missing important credit information. Contact the credit reporting agency in writing immediately to fix any errors. Be sure to provide complete and necessary information so that the agency can complete an investigation and repair any inaccuracies.[1]

Write the various reporting bureaus with the explanation of your circumstances and ask for removal of the item. If they are not willing to remove the information, you have the right under the Fair Credit Reporting Act to attach personal statement (up to 100 words in most states) explaining the circumstances. Depending upon the type of information reported by the bureau, your credit record and score may be affected up to ten years.
Even if the debt has passed the SOL in your state for suit (variable by state) and even the federal SOL for reporting (roughly 7 years from when the debt discharged) a collector may still pursue you for this money if you owe it. They will just never be able to collect it or report it if you don't allow them to, although they will certainly try and hope you are ignorant enough of the law that they get money from you.
You're the best. My mom added me as an authorized user to a couple of her cards (when I was 12, and she never even told me about it), but they're at 99% utilization and have late payments! I'm still in the process of trying to get myself removed from those, and getting those accounts completely removed from my credit report, not just listed as closed accounts. 
As I mentioned earlier, excellent credit takes time. One way that you can use time to your advantage is by maximizing the impact of the "new credit" category of information, which makes up 10% of your FICO score. Obtaining or applying for new credit is generally seen as a risk factor by lenders, so the fewer items that can be considered new credit, the better.
Just to give you an idea of the type of results to expect, Lexington Law claims that their clients have an average of 10 negative items removed from their credit report.  Most companies do offer a money-back guarantee if you're not satisfied with their service.  In addition, most services offer a free case evaluation so they can see if they can help your situation before you decide to sign up.
Self Lender, based in Austin, Texas, is designed to help consumers increase their financial health. Working in partnership with multiple banks, Self Lender offers a credit-builder account that is essentially a CD-backed installment loan. In other words, you open a CD with the bank and they extend a line of credit to you for the same amount. When you make payments, they report it to the credit bureaus.
Nearly 8 out of 10 credit reports have errors.  That means, remove the errors and your score will most likely increase. Go through your credit reports very carefully. Especially look for; Late payments, charge-offs, collections or other negative items that aren't yours, Accounts listed as "settled," "paid derogatory," "paid charge-off" or anything other than "current" or "paid as agreed" if you paid on time and in full, Accounts that are still listed as unpaid that were included in a bankruptcy, Negative items older than seven years (10 in the case of bankruptcy) that should have automatically fallen off your report (you must be careful with this last one, because sometimes scores actually go down when bad items fall off your report. It's a quirk in the FICO credit-scoring software, and the potential effect of eliminating old negative items is difficult to predict in advance). Also make sure you don't have duplicate collection notices listed. For example; if you have an account that has gone to collections, the original creditor may list the debt, as well as the collection agency. Any duplicates must be removed!
I had a $10,000 surgery when my medical insurance lapsed. I had to fill out a form with the hospital that stated I could not afford to pay it and they forgave it/never went on my credit. If you make under a certain income, the hospital should help you get those off, call the hospital and ask. It may be too late since it’s in collections already, if that’s the case, don’t pay it because it won’t change the negative impact since it’s already in collections. Wait for it to fall off.

If you've already used up your free credit reports for this year, you can order your credit reports directly from the credit bureaus for a fee. The bureaus all offer a three-in-one credit report that lists all three of your credit reports side-by-side. The three-in-one credit report costs more than a single credit report, but less than the combined price of purchasing your individual credit reports.
If you don’t have enough money to make payments, then you’re going to have to consider somehow settling those debts 3 Tips to Beat the Debt Collectors When Facing Bankruptcy (Or Late With Bills) 3 Tips to Beat the Debt Collectors When Facing Bankruptcy (Or Late With Bills) Serious financial problems are among the most stressful situations a person can encounter. Follow these tips to let technology take away some of the burden. Read More , either through a consolidation loan or some form of bankruptcy. Credit counseling services are an option if you want to settle debts but don’t feel comfortable negotiating them on your own.
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If you  do not know anything about credit, you will not be sure if the company actually knows what they are doing. You will want to ask about the factors that contribute to a credit rating.  Inquire about age of open credit lines, hard credit inquiries, and the percentage of on time payments. A reputable credit repair company will not only know the right answers, but also how to fix them. 

The moment you’ve cleared a debt, the idea is to get it off your report. However, if you’ve handled a debt well and been prompt with clearing your dues, it reflects well on your report and hence, your credit score. So, don’t close accounts where you have a good repayment account. The bad debts anyway get written off from your account in a few years’ time.
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