get onto
verb (preposition)
Also: get on
to board or cause or help to board (a bus, train, etc)
(intr)
to make contact with; communicate with
(intr)
to become aware of (something illicit or secret)
the boss will get onto their pilfering unless they're careful
(intr)
to deliver a demand, request, or rebuke to
I'll get onto the manufacturers to replace these damaged goods
See usage note at
onto