Product: Debt collection

I have been working with National Credit Systems about an eviction debt. I had a wage garnishment against me and a judgement for {$1400.00}. The debt was shared by my ex-husband and I for an apartment we both lived at, until we decided to separate and I left the premises. After physically leaving the residence myself and unable to force my ex-husband to leave due to his name being on the lease, I had to remove myself and my children from the property of XXXX XXXX XXXX in XXXXXXXX XXXX in XXXX. 
On XX/XX/XXXX, I received an email stating a judgment had been filed. 
On XX/XX/XXXX, I notified the apartment by email that the unit was vacated since XX/XX/XXXX. The apartment complex had been given the unit back in their possession. After the complex accessed the apartment and review any necessary damages or charges, they did not file any additional enforcement of any debts and we were not notified any further about debts owed. Within a month, the debt had already been sold to collections without any other information given to me to pay anything off until I reached out myself to XXXX XXXX. 
On XX/XX/XXXX, I made a payment in the agreed amount {$1200.00} based off communication with a representative named XXXX from National Credit Systems. I was under the impression this was a settlement amount to resolve the debt entirely. There is no other court proceedings that indicate any further debt was owed to XXXX XXXX National Credit Systems . 
Upon seeing that my credit report did not reflect the payment I made as agreed, I emailed National Credit Systems to ask for a payoff letter and why I still show a debt. I contacted XXXX XXXX XXXX courts on that same day to confirm if any additional court cases were held against me by XXXX XXXX or if any additional debt was showed owed, to which the courts stated there were none. 
On XX/XX/XXXX, I called XXXX XXXX XXXX XXXX and was advised a Satisfaction of Judgment was sent in and nothing else was ordered as owed and the case is closed. 
After seeing a new debt amount listed on my credit report, I contacted National Credit Systems and was advised by XXXX XXXX and XXXX that the new debt showing is the balance left from what XXXX XXXX is charging me. I advised them this debt is not valid and I will not be paying them for the amount which was not ever validated in court. The judgment was satisfied and the courts did not order any additional amounts be paid. The case against me for eviction has been resolved, yet the creditor is attempting to collect on a debt that is not valid. When I asked XXXX today, XX/XX/XXXX, why did the complex not take my ex- husband and I back to court for the new debt amount she only replied that the complex needed access to the apartment before they could calculate any further charges. This holds no relevance to the fact the complex did not report any additional debt or charges owed in court at any time since the original signing of the judgement on XX/XX/XXXX. 
National Credit Systems presents inaccurate information as if they were first hand witnesses to the situation or were even remotely involved in the process other than collecting felonious debts they have bought from other companies. The debt is over seven years old at this time and is still reporting as a current active debt, far past statue of limitations. The company refuses to remove the incorrect debt amount from my credit and does not acknowledge that the debt should not be listed as negative on my credit even though it is more than seven years old.