Commercial Trade, Inc. Debt Collection Complaint

Commercial Trade, Inc. Debt collection department,

I do not know Disclosure verification of debt Not disclosed as an attempt to collect California

Just received notification from - subscription that a new collections was added to my report. Puzzled, I log on to see what was going on. - collections were reported to the credit agencies, however, not one time did Commercial Trade Bureau contact me via phone -or- mail. How can I pay debts that I know nothing about when the collections agency is n't properly notifying me?