HCFS Health Care Financial Services, Inc. Debt Collection Complaint

HCFS Health Care Financial Services, Inc. Debt collection department,

I do not know Cont'd attempts collect debt not owed Debt is not mine Florida

During my recent credit check I have noticed a claim by a collection agency for $1700.00 for unknown services which dropped my credit score by - points. I sent a certified letter to this collection agency and the letter came back as undeliverable, and return to sender. The company in question is ARS ACCOUNT RESOLUTION or ACCOUNT RESOLUTION SERVICES - - - - - - -, FL -. Please find attached attachments regarding this correspondence.