I.C. System, Inc. Debt Collection Complaint

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

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

I have sent 3 certified letters to this company requesting that they validate this account. I have never had this service & have knowledge of the at all. I requested a contract or some type of agreement between myself and the company be provided to me however, they have ignored an nagated every request. I spoke with - - id # - and he told me to just file identity theft or fraud because that was the easiest route. All my attempts to resolve this matter with this company have failed. I want this account removed from all - credit bureaus and their files if they can not provide me the necessary documentation, They only information they provide me was a last bill with a balance.