Product: Credit reporting

I had a credit card with XXXX The credit limit was {$400.00} ; XXXX would not allow credit beyond {$400.00}. I honestly doubt that I had reached the credit limit when the account was closed. Never the less, XXXX XXXX XXXX is reporting that I owed a balance of {$690.00} on the account. They have failed to provide proof as to how my balance became {$300.00}. over the credit limit. Another issue I have with this company is that they are reporting this as an open account from XXXX ; when the truth is that this account was charged off in XXXX. 

I 've disputed this info with all three credit bureaus to no avail. XXXX, Equifax and XXXX is allowing XXXX XXXX XXXX to omit payment history and other pertinent info from the XXXX account which would clearly show that this debt arose in XXXX not XXXX and the true balance. Because the agencies refuse to do a real investigation and require a full/ accurate reporting, I decided to try to resolve my business with XXXX XXXX XXXX by making a settlement. 

We agreed to settle the debt for {$380.00}. in XXXX XXXX. Notwithstanding our agreement, XXXX XXXX XXXX is still reporting the debt as an open account with a balance. One credit bureau is reporting a Balance of {$690.00} ; others are reporting a balance of {$310.00}. To add insult to injury, XXXX XXXX XXXX is reporting that balance as a " late/ missed payment. " I would like to know if it is legal to continue reporting that an account has late or missed payments when it has been charged off and settled for a lesser amount. 

I feel like this company has broken the law and Equifax has violated my rights under the fair reporting act. I can not let XXXX XXXX XXXX keep misrepresenting the nature, balance and time frame in which this debt occurred. Is there any way that you can send me a copy of the fair credit reporting act in its entirety? If I ca n't get any resolution here, I 'm going to have to take these people to court. They are purposely trying to destroy my credit with lies and no one is doing anything about it. The strange part about this entire ordeal is that Equifax continue to report this inaccurate info without a thorough investigation. Further, Equifax continues to omit certain info such as history, XXXX date of delinquency etc. 
There are numerous instances where Equifax 's failure to follow and uphold the rules and requirements has caused my credit score to drop. They are still reporting old student loans which have been bought, sold, transferred and negatively reported by the XXXX XXXX XXXX XXXX, XXXX XXXX, and XXXX XXXX Loans for decades. Equifax knows very well how old these student loans are because they have been reporting this re-aged info for 10-20 years. I have credit reports dating back as far as XXXX with is same negative info, missed payments etc. Never the less, Equifax continues to verify the out dated accounts as accurate with no deletion. 
Recently a new inquiry showed up on my credit report which I had no knowledge of. Equifax, claim they found no errors with the reporting of the inquiry. I have a letter from the XXXX and XXXX stating that my credit was pulled in error. Equifax still wo n't delete the new inquiry. 
Finally, XXXX medical bills from XXXX ( {$15.00} each ) recently appeared on my credit report which I had no knowledge about. I paid off both medical bills and disputed the accounts with Equifax and would n't you know it? Equifax found no inaccuracies during their so-called " investigation '' and refused to edit the reporting. 
I am beginning to have doubt about Equifax investigation process and policies in terms of reporting inaccurate info please help.