The debt collection company name National Credit Systems has failed to provide any proof that i lawfully owe the debt in question nor any letters in writting stating who they represent. I have requested in writting as well as verbally and through the XXXX for such information. On each time that i have spoken to this company on their recorded calls i have stated i am willing to pay a debt i owe once i receive written documentation. Every time i have called they have said on multiple circumstances that they have already sent the requested documentation wereas since XXXX i still have not received this documentation. In the most recent response through the XXXX they stated " they were in the process of obtaining the verification and mailing it to consuner ''. Im quite baffled how after multiple statements on their recorded calls they stated they have already mailed out such coorespondence but now after taking matters further have to locate such verification. I have reached out to the origional creditor as well during this process to obtain any information regaurding account wereas it was told to me that they were bought out by a new management company and no longer have prior records. I have been attempting to resolve this debt but I as a consumer do not feel sending money to an unidentified company to a XXXX XXXX in another state without supporting documentation is unlawful under any circumstances.