Product: Credit reporting or other personal consumer reports

Hello Experian, I recently received a response to a dispute that I made under FCRA XXXX ( a ) regarding a few erroneous items on my credit report. I was beyond appalled to learn that you somehow verified the disputed items in question somehow and they are still on my credit report, despite multiple previous written requests, which is now a violation of federal law. 
According to the FCRA, you all have an obligation to have a copy of the original creditors documentation on file to verify that this information is mine and additionally, that it is reporting accurately. In the results of your initial and subsequent reinvestigation, you all simply stated in writing that you verified that these items are reported correctly, to which I ask the following question : who verified these accounts? 
I ask because I am extremely interested in learning how you all arrived at this erroneous conclusion? I would like a complete list of all documents and any correspondence that came about in these alleged investigations. These lists should also include the names and contact information with anyone you all spoke with as part of this investigation. 
Despite my request, you all have FAILED to provide me a copy of any ORIGINAL documentation ( a consumer contract with MY signature ON THE CONTRACT ) which is REQUIRED under Section XXXX ( a ) ( XXXX ) ( A ). Not only that, but you have also failed to provide me with the method of verification as required under Section XXXX ( a ) ( XXXX ). 
If you were actually familiar with and lawfully abiding by the FCRA, you would know that under Section XXXX ( XXXX ) ( A ), you are REQUIRED to ... promptly DELETE all information which can not be verified as the law is written. This is extremely clear and clearly indicates both the civil liability and the remedy available to me ( please see Sections XXXX & XXXX ) if you fail to comply with XXXX XXXX. Had you actually conducted a thorough investigation properly as opposed to using your XXXX XXXX  you would have known that these items listed below should have been removed. 

XXXX BANK - Account number # XXXX I have conducted my own research in this instance and learned throughout doing so that in the case of XXXX XXXX XXXX, XXXX XXXX XXXX, and XXXX XXXX XXXX, XXXX, et al, the courts ruled in each and every instance throughout those cases that the XXXX XXXX XXXX absolutely can not parrot information from creditors and collection agencies. In those rulings, it has been ruled that you all are XXXX to conduct an independent REASONABLE investigation to ensure the validity of the debt and the honesty/integrity of the creditor/collection agency in question. Sending out a generic form through the XXXX XXXX  that does not even contain my reasons for the dispute is not deemed reasonable! 
Please be aware that I am a litigious consumer and in the process of pursuing litigation in this matter to enforce my consumer rights pursuant to the FCRA in its entirety. I expect to receive a response within 15 days of receipt of this letter containing all of the information requested above, or I will expect to see the items in question permanently removed from all records. I have supplied all required documents multiple times establishing my identity; there is zero need for your fake games to attempt to buy time for lack of effort on your end by saying you need further information and documentation when you have everything you need as does my representation, the CFPB and my states attorneys office. 
I would greatly appreciate your prompt and swift service here in resolving these matters.