Product: Credit reporting or other personal consumer reports

I've been reaching out to Experian about inaccurate information they have been reporting on my credit reports for years now, and everytime they have failed to provide me with validation and verification of an alleged debt that I personally reached out to the collection agency myself and they failed to validate the alleged. 
I recently sent a certified letter to Experian dated XX/XX/XXXX, they ignored it. Then I submitted the dispute on their site and requested the same information, and they replied that it remains without addressing the dispute. They also are continuing to report inaccurate information on my report. Every month, they are reporting a different amount as they are adding interest onto a collection account, so who are they verifying this information with? 
Below is what they ae reporting XXXX XXXX XXXX Potentially Negative Account Info Account Name XXXX XXXX XXXX Account Number XXXX Account Type Collection Responsibility Individual Date Opened XX/XX/XXXX Status Collection account. {$2500.00} past due as of XX/XX/XXXX. 
Status Updated XX/XX/XXXX Balance {$2500.00} Balance Updated XX/XX/XXXX Recent Payment - Monthly Payment - Original Balance {$2000.00} Highest Balance - Terms 1 Months On Record Until XX/XX/XXXX Payment History XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX Collection ND No data for this period Payment history guide Collection as of XX/XX/XXXXXXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXXXX/XX/XXXX This account is scheduled to continue on record until XX/XX/XXXX. 

Balance Histories Date Balance Scheduled Payment Paid XX/XX/XXXX {$2500.00} {$0.00} {$0.00} on XX/XX/XXXX XX/XX/XXXX {$2500.00} {$0.00} {$0.00} on XX/XX/XXXX XX/XX/XXXX {$2500.00} {$0.00} {$0.00} on XX/XX/XXXX XX/XX/XXXX {$2500.00} {$0.00} {$0.00} on XX/XX/XXXX XXXX XXXX {$2400.00} {$0.00} {$0.00} on XX/XX/XXXX XX/XX/XXXX {$2400.00} {$0.00} {$0.00} on XX/XX/XXXX XX/XX/XXXX {$2400.00} {$0.00} {$0.00} on XX/XX/XXXX XX/XX/XXXX {$2400.00} {$0.00} {$0.00} on XX/XX/XXXX Additional info The original amount of this account was {$2000.00} Historical Info Original Creditor XXXX XXXX XXXXXXXX XXXX  Contact Info Address XXXX XXXX XXXX XXXXXXXX XXXX XXXX  XXXXXXXX XXXX XXXX Phone Number ( XXXX ) XXXX Comment Current : Account information disputed by consumer ( Meets requirement of the Fair Credit Reporting Act ). 
Previous : Account information disputed by consumer ( Meets requirement of the Fair Credit Reporting Act ). 
XXXX XXXX to XX/XX/XXXX, XX/XX/XXXX to XX/XX/XXXX Reinvestigation Info This item remained unchanged from our processing of your dispute in XX/XX/XXXX.