If you get a call about missing jury duty, DO NOT give out any information.
Call 251-574-8603 Mobile County Court Administrator’s Office to check and see if you received and/or missed a jury summons.

Warning to NOT send any money or buy any prepaid (Green Dot) Visa cards to give over the phone.

Find details from the FBI link below.
http://www.fbi.gov/news/stories/2006/june/jury_scam060206

This video shows how the scam works.