English question- Correct usage of words.

I have often come across many people who use the word reassign back. Is it necessary to have the word back after reassign. The word itself has the word re which means again.

EG: I have reassigned the defect to you.

vs

I have reassigned the defect back to you.

What if it is used like “Re-assigned vs Reassigned”?

Many people use revert back or reply back instead reply and revert and I think it is totally wrong.

Please advise.

Thanks.