send back for
send back (to something or some place) for (something)
1. To instruct or direct someone to return (to something or some location) to retrieve or accomplish something. In this usage, a noun or pronoun is used between "send" and "back." I realized I had left one of the binders for the meeting in the office, so I sent my assistant back for it. The agency is sending me back to the company for a follow-up investigation.
2. To instruct that something be returned (to something or some location) for some reason or to have something done. In this usage, a noun or pronoun can be used before or after "back." We sent the machine back for some repairs. The customer sent the meal back to the kitchen for being served cold.
send someone back for something
to cause someone to return to get something. He came without it, so I sent him back for it. Ted sent Roger back for the rest of the groceries.