American Credit Adjusters Debt Collection Complaint

American Credit Adjusters Debt collection department,

Taking/threatening an illegal action Threatened arrest/jail if do not pay Illinois

I continuously get calls from a - - '' with some collection service called ACA. '' He calls my work phone number and threatens that something serious will happen if I do n't return his phone call. The number he leaves is -. He harasses my human resources department as well. I need these illegal calls to stop.