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 toI'll get onto the manufacturers to replace these damaged goods
See usage note at onto
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012