I received a notice from Medical Revenue Service ( MRS ) on XXXX alleging I owe a debt in the amount of {$530.00}. I submitted a validation/verification of the debt to MRS on XXXX, because I have been a XXXX. They received my request on XXXX via XXXX Certified Mail, disputing the allege debt, advising MRS that I was not the debtor in question. MRS responded to my request of verification/validation on XXXX with an allege bill that I had no knowledge of. I submitted another letter to MRS on XXXX for further verfication/validation which they received on XXXX via XXXX Certified Mail. MRS responded to my XXXX request on XXXX advising me that they are not willing to provide me with any further documents to verify or validate that I am the debtor. They responded with the same allege billing statement they sent on XXXX. I dispute the debt in question and I am not responsible for any portion of the debt that MRS claim I owe. MRS have not and are refusing to verify that I am the debtor and continue to try and collect on an unverified debt. MRS have not proven that the alleged debt is mine, nor have they willing provided me with my request of a ( 1 ) XXXX agreement between me and their client ( 2 ) they have been assigned to collect on the original creditors behalf and ( 3 ) I am the debtor in question. This violates the FCRA and FDCPA, according to the laws of collection practice.