You will want to sue this person in Justice Court in Phoenix. Which justice court you choose will be based on where the property is. The justice court clerks will be very helpful and get you the forms you need or go to www.azturbourt.gov. Once you have the judgment, you can also get packets of forms from the justice court for doing a wage garnishment. The forms you will need are available from the justice courts, over their Web site or at www.azturbocourt.gov.