Being detained is the same as arrest (if but temporarily). You is a funky word. Only means something if you respond to it.
How about a reply of "Who are YOU addressing? Followed with "Is that an ORDER? If so I will need your personal information so I may invoice you later."
Is good?
Printed copy · Anthology Volume 9, page 867Printed copy from The Tender For Law Anthology, Volume 9, page 867 (printed 13 June 2014). Added by this site; not part of the Facebook export.