NO” is a complete sentence. It does not require an explanation to follow. You can truly answer someone’s request with a simple No.

I have no explanation for that.

Real freedom is saying 'no' without giving a reason.

Sometimes God delays His answers so that we'll learn how to wait

There was no explanation. We're still seeking clarification.

If the person you're talking with continues to press you for more or can't seem to accept your answer, then you are being harassed. I know that sounds hard for people-pleasers to accept, but it's true. No means no.