get through to someone—
1. get in touch with smb. by telephone:
- It is very rare that you will get through to the right person on the first call.
2. succeed in being understood or accepted by a person:
- Few teachers can get through to students who don’t want to learn.
get through with someone—finish punishing or scolding a person:
- When the teacher had got through with the class, they felt very ashamed.
Note: Neither expression correlates in meaning with the phrase get someone through—(also: put someone through)
1. cause smb. to pass an examination, go through a course of study, etc.:
- I was able to get all my students through, except three whose English was the weakest.
2. put smb. in touch with a person by telephone:
- After some time the operator finally got me through.