If the new love cannot provide for her, she has but to call back the old.

He wanted to call back his words, but they were between them now.

Before going, she was told to call back the next day.

To get my first job, I called the place 10 times at least, and they did not call back.

And she called back with something to report within an hour.

On the other hand, we're not actually going to call back everyone.

But when I called back a few days later, he seemed much less sure.

Would you like to call back again when we have some?

I'll be in the office for the next three hours, so feel free to call me back any time.

If the answer is no, they call back three months later and ask again.