BYL Collection Services Debt Collection Complaint

BYL Collection Services Debt collection department,

Medical Cont'd attempts collect debt not owed Debt is not mine Delaware

BYL is listed on my credit file as an unpaid debt. I have no idea what this is for, and they have never sent me anything. This is unfair collection tactics to just place something on someones credit file without verifying if the debt is valid. I want this removed from my credit file. They are causing me financial harm because I am trying to refinance my home. Their tactics are deceptive by never contacting me before putting something on my file that is not mine.