Get back AT vs Get back TO

Have you ever wondered about the difference between the above two expressions?

When someone says, "I'll get back to you later", it means she will give you the info you wanted later because she's busy now.

But if someone says she wants to get back at you, then you'd better watch your back as it simply means she wants to take revenge on you.

What a difference a word can make, huh?

Use the wrong preposition and the whole meaning changes!

So be sure to use the right preposition. Don't ever get them mixed up.

You don't want to be all trusting of someone who wants to get back at you, do you?
Neither do you want to be standoffish with someone who simply promises to get back to you, right? Or you'll never get that piece of info you need.