Sentence examples for heard back thus from inspiring English sources

Nitpicker and The Capitol Fax have both contacted the Kirk campaign for a response to the memo, and neither has heard back thus far.

So far I have not heard back.

Never heard back.

Have you heard back?

She never heard back.

(I never heard back).

He never heard back.

Essawi never heard back.

He hasn't heard back.

I haven't heard back.

But he said he never heard back.