Citibank Debt Collection Complaint

Citibank Debt collection department,

Credit card Taking/threatening an illegal action Sued w/o proper notification of suit Georgia

I recently began getting my wages garnished by - - - who claimed that they had a jidgment against me for over -. I was never served judgemnt papers or even a notification of the court filing or date. I also never was notified about the garnishment. The actual debt is not even on my credit report so Im not sure how they are collection money I do not owe. When I called the attorneys office they used they had an address in a different state to which I live.