To get through to is to reach somebody, or to make them finally understand. Get through to the office.
The telephone sense and the understanding sense are the same picture of a barrier. To get through to somebody who has stopped listening takes a different approach rather than more volume.
1phraseget through toTo reach somebody, or to make them finally understand.
“It took forty minutes to get through to anybody on the line.”
get through to is a phrase.
Practised in Phrasal Verbs