Harris & Harris, Ltd. Debt Collection Complaint

Harris & Harris, Ltd. Debt collection department,

Medical Disclosure verification of debt Not given enough info to verify debt Indiana

I have a mark on my credit score from - different companies ( HARRIS & HARRIS, LTD, and - ) about the same debt. My credit score says that the debt was reported by - - but when I tried to contact all of the possible medical practices that I have been to in the past 2 years, none of them had any record of me owing a debt. I can not find any legitimate information about the - different debt collection agencies to be able to email them and contact them myself. I would just like to pay any debt that I potentially have, or get the mark removed from my credit score if it is a mistake/scam.