get through

1.  Reach the end, finish, complete, as in Now that our computer system is working again, I should get through by mid-afternoon. It is also put as get through with, as in As soon as we get through with painting the kitchen, I'll call you. [Mid-1600s]
2.  Succeed in passing or surviving something, as in This epidemic is awful, but I'm sure we'll get through it somehow. [Mid-1700s]
3.  Also, get through to someone. Make contact with or reach someone, as in After trying to reach them all night, we got finally through, or He tried to get through to the family. [Late 1800s]
4.  Also get through to. Make oneself understood, as in Am I getting through to you? [Colloquial; mid-1900s]