I.C. System, Inc. Debt Collection Complaint

I.C. System, Inc. Debt collection department,

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

I was contacted by I.C. Systems Inc around -/-/- about a -/-/- medical debt. I have not not heard about this debt so I wrote I.C. systems a certified letter requesting additional information and asking them to verify the debt. I have not received any responses, but instead, have received another collection letter threatening to escalate the issue to their attorney for not attempting to pay or resolve the issue, which is a lie. Today, I sent 2 more certified letters, one to their - - and another to their physical address. And, they reported this debt to the credit bureaus incorrectly showing a Date of Delinquency of -/-/-