From Longman Dictionary of Contemporary Englishget (something) through to somebody phrasal verbEXPLAINto succeed in making someone understand something, especially when this is difficult I couldn’t seem to get through to her. How can I get it through to him that this is really important? → get→ See Verb table
Examples from the Corpus
get through to • It seems Connell got messages through to her somehow.• Anna Well, get a message through to him too.• Can anyone get that through to Lima?• You got right through to me in a way nobody has ever done before.• Father Lefebvre got handed through to the front at the same time.• He was also able to get word through to the Minister of War of what was taking place. 