Request the return of a defective product (6)
I believe the answer is:
recall
'request the return of a defective product' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for recall that I've seen before include "Hark back" , "Order to return" , "Summon back - ability to remember" , "Request the return of a defective product" , "Get back" .)